Table of Contents

Back to top

ShareMouse v4 - Manual


ShareMouse allows you to control multiple Macs or Windows computers with the mouse or keyboard of any other computer:

Moving the mouse to the screen of another computer, causes the mouse pointer to jump to that screen, allowing you to control a remote computer:


ShareMouse transmits mouse/keyboard actions through the existing network connection.

Software Installation

ShareMouse consists of a small program, that runs on each Windows and Mac computer you wish to control.

Windows installation

Video tutorial

You can either install the ShareMouse client on the computer or alternatively run it from an USB memory device in portable mode.

  1. Download the installation file.
  2. Double-click the setup program and follow the on-screen instructions.
  3. Repeat the installation on all computers.
  4. If you purchased a license, register your license key on one ShareMouse installation.

ShareMouse service

The Windows installation procedure installs a Windows service with following benefits:

The ShareMouse client appends "(service)" to the program name if it has been launched by the ShareMouse service.

The ShareMouse service is not available in portable mode as it requires an installation on the guest computer.

If you need to restart ShareMouse with the service installed, you need to restart the ShareMouse service (video tutorial). Do not restart ShareMouse like a regular program.

Portable Mode

If you do not have permissions to install ShareMouse or if you occasionally want to use ShareMouse on a PC, you can alternatively run it from an USB memory device:

  1. Download the ShareMouse Portable Edition ZIP file.
  2. Extract the ZIP file contents into any folder of the USB device.
  3. Double-click the program file "ShareMouse.exe" located in the program folder on the USB device.

ShareMouse automatically enables Portable Mode if it detects being launched from a USB storage device. If USB device detection fails, you can force portable mode by launching ShareMouse with command-line parameter -portable.

In portable mode, ShareMouse does not write any files onto a guest computer.

  • Shut down the program before unplugging the USB device to prevent losing program settings changes.
  • In portable mode, ShareMouse cannot install/use the ShareMouse Windows service.

MacOS installation

Video tutorial

  1. Download the Mac installation file.
  2. Double-click the setup program to open the installer.
  3. Drag the ShareMouse application from left to right into the application folder.
  4. Repeat the installation on all computers.
  5. If you purchased a license, register your license key on one ShareMouse installation.

ShareMouse must be authorized in Apple macOS accessibility settings on all Macs, that you wish to remote control:

Video instructions

In Mac macOS 10.10 ("Yosemite") and later, this setting is available in System Preferences » Security & Privacy » Privacy.

In Mac macOS 10.9 ("Mavericks"), this setting is available in System Preferences » Security » Privacy » Accessibility.

Click the pad lock to unlock the settings and check-mark ShareMouse in the list of applications.

Important: Each ShareMouse update requires to uncheck and check this setting again.

EVEN MORE IMPORTANT: If such re-confirmation of the privacy setting is required. Exit ShareMouse before re-applying the checkmark in macOS privacy setting as otherwise mouse clicks may not work anymore for unknown reasons. In such case, press the power button for a couple of seconds to perform a system reset.

Getting Started

  1. Launch ShareMouse on all computers.
  2. The ShareMouse symbol shows up in the lower right of the Windows task bar (in the upper right menu bar on a Mac):

    ShareMouse Startleistensymbol

    Windows hides icons of newly installed programs in a task bar sub menu by default. To make it permanently visible, click the rectangle icon and drag the ShareMouse symbol into the task bar:

  3. All computers must be connected to the same local network. Grant ShareMouse permission to pass the firewall.
  4. A successful connection is indicated by a green circle with a check mark in the ShareMouse icon:

    ShareMouse connected

    Perfect! If you see this icon on all computers, ShareMouse is ready to use!

Visit the trouble shooting section if ShareMouse clients do not connect.

Remote control a computer

To control another computer…

ShareMouse automatically determines the monitor position of the remote computer from the direction you move the mouse:

Remote controlled computer located on the right

If the mouse is moved beyond the right-hand side of a monitor, ShareMouse assumes the remote PC being located right. This works in any direction.

For ambiguous positions in multi-monitor configurations, ShareMouse displays letters from A-Z, allowing you to select the desired monitor by pressing the corresponding letter:

Monitor identification

The mouse cursor then magically jumps to the monitor of the remote computer, allowing you to control programs on that remote computer with the mouse and keyboard of the controlling computer.

You can also drag & drop files or transfer the clipboard between computers.

Move back the mouse to the controlling PC or repeatedly press the ESC "panic" hotkey to cancel the remote control.

Monitor Manager

The Monitor Manager allows you to review and fine-tune the monitor positions.

Video Tutorial

To open the ShareMouse Monitor Manager, click the ShareMouse tray icon and select Monitor Manager from the menu:

ShareMouse tray icon menu

SHIFT-click the ShareMouse icon for quick access to the Monitor Manager.

The Monitor Manager visualizes the monitor positions of all connected computers:


Click and drag the monitor symbols to match the layout with the monitor positions on your desk.

The local monitor is indicated by a thicker border. Hover monitor symbols for additional information.

The relative positions of multiple monitors of one computer must be configured in the Display Properties of the operating system on the remote computer.

Multiple monitors of one computer must be lined up without gaps or overlaps.

Monitor Layout Profiles

Sharemouse automatically creates separate monitor layout profiles if a computer is used in different work places.ShareMouse automatically switches to the corresponding monitor layout.

Example: If you have a laptop used at home (with a Mac on the right and another Windows PC on the left) and at work (with three Windows PCs on the right), ShareMouse automatically switches configuration correspondingly.

Register your license key on the roaming computer. This computer will license all other connected computers over the network connection wherever you work.

Data Transfer

ShareMouse allows you to drag files or to transfer the clipboard between computers.

Drag & Drop files

Drag one or multiple files or file folders to the monitor of the desired target computer to intuitively exchange files:

Clipboard synchronization

ShareMouse automatically transmits those file(s) and folder(s) to the remote computer.

Clipboard Transfer

Video tutorial

ShareMouse can copy & paste the clipboard between multiple computers:

  1. Copy contents into the clipboard on one computer, e.g. with the system hotkey CTRL+C.
  2. Move the mouse to the monitor of the desired target computer.
  3. Press the customizable remote paste hotkey CTRL+V to insert the clipboard on the target computer.

Supported formats

Clipboard transfer supports files, formatted and unformatted text and bitmaps.

The paste command in program menus will not insert the remote but the local clipboard. To paste remote clipboard contents, you must use the remote paste hotkey.

The remote paste hotkey can be customized in the program settings, giving you the choice of pasting the local or remote clipboard.

ShareMouse can transfer files but no program windows between computers. Each computer runs their own programs.

Check the trouble-shooting section if you experience problems with clipboard synchronization.

Program Settings

To configure ShareMouse, click the ShareMouse tray icon and select Settings from the popup menu:

ShareMouse tray icon menu

For quick access to settings ALT-click the task bar icon.


Options under Settings » Switching simplify navigation in large monitor setups:

Prevent unwanted switching

To prevent unwanted mouse transitions between computers, choose from following options under Settings » Switching:

Enable option Double-tap monitor border to override switch prevention to temporarily override any of the above switch prevention features.

Temporarily disable ShareMouse

Video tutorial

To temporarily disable ShareMouse, click the task bar icon while holding the CTRL-key. Repeat this action to re-activate ShareMouse. On Macs, press the CMD-key instead.

QuickJump Hotkey

The customizable QuickJump hotkey under Settings » Switching moves the mouse pointer instantly to a specific monitor without the need to move the mouse all the way across large monitor setups.

If the setup consists of two monitors, the mouse cursor jumps to the opposite monitor.

For more than two monitors, letters from A to Z are shown on each monitor. Press the letter to jump to that monitor.

To cancel QuickJump, touch the mouse of the remote controlled computer or press the Panic hotkey ESC.

While you can use different hotkeys on each computer, we recommend to use the same hotkey as it allows you toggling between monitors with the same easy-to-memorize hotkey.


Under Settings » Exchange you can enable the file drag & drop and clipboard synchronization feature and configure the hotkey to paste the contents of a remote computer's clipboard.

We recommend to use the remote clipboard paste hotkey CTRL+SHIFT+V. This allows you to decide case-by-case whether to paste the local computers clipboard contents (with the system hotkey CTRL+V) or to paste the remote clipboard contents by adding the SHIFT-key.


Video demo

ShareMouse can sync several events on all connected computers as configured under "Settings » Exchange » Synchronization".


Video demo

Option Settings » Exchange » Shut down shuts down the local computer automatically after a security notification countdown, if any other connected computer was shut down.

Unfortunately, macOS sends the same internal signal for user logout and shutting down a Mac. All computers will shut down, even if you just log out from another Mac. Use the shutdown synchronization feature with care if you log out from a Mac.

Latest Windows 10 updates seem to follow implementing the awkward macOS behavior. Windows now also does not send a shutdown signal anymore. We have to figure out whether this is a Windows bug or an intentional design change.


If option "Suspend" is enabled under Settings » Exchange, the local computer is suspended after a security notification countdown, if any of the connected computers enters suspend mode.

Suspended computers must be wake up with local input devices.


Video demo

If option "Lock" is enabled under Settings » Exchange, the local computer locks after a security notification countdown, if any other computer enters lock screen.

Windows PC can be locked with the system hotkey WIN+L. On a Mac, click the user name in the menu bar and select menu option "Login window".

During ShareMouse installation on a Windows PC, the default option "Remote login" must have kept been enabled. Repeat the installation procedure if you opted this setting out accidentally.

Screen saver

Video demo

If option "Screen saver" is enabled under Settings » Exchange, the screen saver of the local computer is activated if the screen saver activates on any other computer.

The Mac screen can optionally be configured to enable a custom log in dialog which, unfortunately, is not supported by the ShareMouse auto-login feature.


Video tutorial for Mac

If option "Unlock/Login" is enabled under Settings » Exchange, ShareMouse automatically unlocks/logs into the local computer with the configured user account information, if you log in on any other ShareMouse connected computer.

This feature is not available in portable mode.

Any ShareMouse connected user can unlock your computer without entering a password. ShareMouse stores the user login credentials with AES encryption.

Do not use this feature in security critical environments!

Make sure to configure password protection in ShareMouse to restrict the clients who can connect.

On a Mac, we strongly recommend to enable "Remote Login" (SSH access) in macOS System Preferences » Sharing » Enable "Remote Login" to prevent permanently locking yourself out from the Mac in case of malfunction.

Keys (Mac only)

ShareMouse for Mac can optionally translate the Windows modifier keys CTRL, ALT, WIN to the Mac equivalents CMD, OPTION and CONTROL.

If you experience issues with mouse drag operations while pressing any key, try if toggling option "IOHID input simulation" helps.

If you experience issues when working in Remote Desktop sessions or virtual machines on the Mac, try if toggling option "Simulate CTRL, SHIFT, CMD and Option key as flag event" helps.

Secure input warning

The "Secure Input " macOS system function is designed to protect sensitive text input (such as password input) against spying malicious 3rd party programs.

Unfortunately, some applications do not release this shield after intended use and any following keyboard input keeps being invisible for 3rd party apps, including ShareMouse.

The ShareMouse option "Secure input warning" issues a warning if that happens to allow you take action (e.g. by restarting the faulty application).

Unfortunately, on a unknown selection of Macs, calling of this macOS system function adds significant CPU load. If you experience high CPU load, please disable this option.

Changing this option requires a Mac restart.

Work around: Disable "auto-submit" feature of any auto-login feature and/or close and restart the application, that caused the interference.
If you experience high CPU load, disable option "Secure input warning" which triggers a system task which may seem to stuck on a few Macs. A restart of your Mac is required.

Network Configuration

Password Protection

Video Tutorial

By default, ShareMouse adds any other ShareMouse installation in a local network to your setup automatically.

To separate work places with a group of computers from each other in a shared network environment, configure a separate password for each work place:

  1. Open the ShareMouse "Settings" and switch to section "Network".
  2. Enable the password option and enter a password.
  3. Repeat above steps on all computers you wish to group.

Done! Only clients with the same password can now connect to the group.

Password-protection automatically enables AES encryption of network data such as keyboard input, mouse coordinates, clipboard transfer and file transmission data.

If one ShareMouse installation is password-secured, all ShareMouse clients must be password-protected as well.

Software Update Check

Video tutorial

We strongly recommend to keep the program up-to-date with the built-in internet update check.

To check for updates, connect your computer to the internet, click the ShareMouse tray icon and select About ShareMouse » Check for Updates.

Under Settings » Network » Online Updates » Check for Updates, the update check can be configured to only notify you about critical, minor or experimental updates:

Setting Description

Disables automatic update check.

Not recommended as you will not be informed about important bug fixes!

Informs about important updates that may fix critical bugs.

Recommended for companies with a conservative update policy.

Choose this setting if you want to have the very latest version, including minor improvements.

Use only if you expect a customization provided by us or if we instructed you to configure this option for technical support purposes.

Informs about ShareMouse beta versions.

Mac users, heads up!

You must confirm authorization of ShareMouse in macOS with every update: Uncheck the existing ShareMouse item and check-mark it again under System Preferences » Security » Privacy » Accessibility.

Connection Settings

ShareMouse installations find each other by sending/listening for broadcast polls on UDP port 1046 and uses TCP port 6555 for clipboard sharing and drag & drop file transfers.

If these ports are occupied by another application, choose another available port under Settings » Network.

  • Port changes must be applied to all connected ShareMouse clients!
  • ShareMouse programs must be able to pass the firewall through the ports in the local network.
  • You may need to update firewall settings after changing ports!

Please check the Network Trouble Shooting section in case of network connection issues.

Client Management

ShareMouse sends out its own connection information (IP address & port info) if option "Settings » Network » Broadcast own connection info via UDP" is enabled, allowing other clients to find and connect automatically.

If you want ShareMouse to connect to a specific network adapter of another computer, you can add ShareMouse clients by entering the IP address of the preferred network adapter:

  1. Enter the IP address of the preferred network adapter of each client.
  2. Enter the TCP port which is configured under Settings » Network (default is TCP 6555).
  3. Click the Plus symbol to add the clients.
  4. ShareMouse shows a list of computer names of all found clients.

An antenna icon indicates a connected client.


Panic Hotkey

The panic hotkey ESC (on the upper left side of your keyboard) cancels any active remote control, e.g., in the rare case of any undefined system state or if you visually "lost" the mouse cursor in large monitor setups.

Under Settings » Misc, you can customize, how many times ESC must be pressed in order to recognize your state of panic.

Example: If you configure two panic key repetitions, the first ESC press would be sent to the remote computer and the second ESC press would trigger panic and cancels the remote control.


On a Windows-PCs, you can configure a hotkey under Settings » Misc for the local computer, that issues the infamous CTRL+ALT+DEL keyboard shortcut on the remote PC.

The hotkey must be different from CTRL+ALT+DEL.

This feature requires a Pro Edition license.

Monitor Dimming

Video tutorial

ShareMouse can optionally dim inactive monitors if enabled under Settings » Misc

Darker dim levels emphasize the active monitor but makes it more difficult to read contents on inactive monitors.

Arrows indicate the mouse travel direction:

Dimmed monitor with arrow

Disable dimming if the feature causes video programs to quit full-screen.

If dimming is disabled, arrow trails are disabled as well.


The scroll speed setting under Settings » Misc allows you to compensate scroll speed variations, caused by different mouse/trackpad driver settings on a remote computer. The scroll direction can also be reversed.

Show Notifications

Helpful notifications can be enabled under Settings » Misc.

Example: You may have configured ShareMouse to prevent monitor switching in maximized program windows. If you later forget this setting and repeatedly try to move the mouse to another monitor, it would issue a notification, reminding you about the setting. It also offers you to change the setting.

Without such notification, you may infinitely try until total exhaustion. They are a life saver.

Launch at Login

If Mac-only feature "Launch at Login" is enabled under Settings » Misc, ShareMouse launches automatically after logging in.

On Windows PC, ShareMouse launches on system start by default.

Launch at Login Screen

This Mac-only feature under Settings » Misc enables you to remotely log onto a Mac from a remote computer right after power up or after a power cycle.

This feature may not work on Mac devices, that do not enable the required network connection in the pre-boot login screen.


License Registration

Video tutorial

A license key is registered on one single computer (of a computer workgroup in following easy steps.

  1. Purchase licenses on our online shop.
  2. You will receive a license key by email.
  3. Copy the entire license key into the clipboard.
  4. Click the ShareMouse program system tray icon and select Register for professional use.
  5. The license key should appear in the input field and will be registered after you click the button Register.
  • You only need to register one single computer per group of computers you wish to link together with ShareMouse.
  • Unregistered computers of a group of computers will automatically get a temporary license upon connection with a registered computer.

    If you have a computer, that roams between different work places, please register that computer as it will license the setups at either place.
  • One separate license is required for each separate group of computers. Only one computer needs to be registered with that license key.

The license key registration is an one-time procedure. An internet connection is required to store the license key association to your hardware on your online license database. Only your license key, program version number, the language and hardware ID is transmitted to us during this procedure.

Please reboot a Mac if ShareMouse can't connect to other ShareMouse clients after registration.

If no internet connection is available on any computer, we recommend you to run ShareMouse from an USB stick. You can then insert the USB stick onto any other guest computer that has internet connection and register the license from there. The license will be tied to the USB stick for use with any PC (see also chapter "Use ShareMouse on USB flash drives").

License De-Registration

Video tutorial

To apply a new license key (for a maintenance renewal) or if you wish to use the license key for another installation, you can de-register the license key from the current installation:

Click the ShareMouse task bar icon and select About ShareMouse » Release license key.

If you removed ShareMouse from the computer before deregistering the license key, just reinstall ShareMouse, register your license key and then de-register it again.

This operation requires an internet connection in order to delete the license key association in our online database. Only your license key, the version number, the language and hardware ID is transmitted to us during this procedure.

Maintenance renewal

To renew maintenance for an existing registered installation:

  1. De-register the current license key.
  2. Register the new license key.

License status

To review the current license status and maintenance time left, click the ShareMouse task bar icon and select About ShareMouse.

Program States

ShareMouse indicates its current status by its icon in the lower right of the Windows task bar or if using a Mac, on the upper right of the status bar:

Icon Explanation


ShareMouse is loaded and awaiting connection by another client on the network. This is the initial state.

If you cannot establish a connection to any other PC, read chapter "Troubleshooting".


Perfect! ShareMouse has found another ShareMouse client on the network and is ready to use.

You can now start remote controlling the other computer (see chapter "Activating remote control").

Active remtoe control

ShareMouse is currently remote controlling another PC and is sending the cursor position and keyboard to the remote PC.


ShareMouse is temporarily disabled.


ShareMouse issues a warning. Hover icon to get details.


ShareMouse has not found a network adapter or is waiting for configuration. Hover icon to get details.

Windows hides task bar icons by default. Please make sure to enable the ShareMouse task bar icon as it displays important program status information.

Uninstall ShareMouse

Video tutorial

Remove your license key from your current installation before uninstalling the software!

Exit the ShareMouse program and remove ShareMouse with the operating system feature to remove programs (please refer to the OS documentation for more information).

ShareMouse installs files into following locations and should automatically remove those folders with uninstallation:

ShareMouse writes following keys into the Windows registry which should be removed with uninstallation:

ShareMouse also writes configuration information to the AppData folder of each user. These folders cannot be removed by the uninstallation routine:

You can safely remove delete these folders after uninstallation.

If the Uninstaller tells, that ShareMouse is still running while there is no visible ShareMouse tray icon, press CTRL+SHIFT+ESC to open the task manager, switch to the tab "Processes", click "Show processes from all users", highlight the process 'ShareMouse.exe' and click the 'End Process' button.

If running ShareMouse from an USB stick, simply delete the program folder that holds all ShareMouse program files.

If you forgot to remove a license from an installation, re-install ShareMouse, remove the license and uninstall ShareMouse.


Upgraded to latest macOS "Mojave"?

No problem! ShareMouse v4.0.46 seems to work fine on Apple macOS "Mojave" on our systems.

However, you may need to re-confirm macOS privacy settings.

Before unticking/ticking the checkbox, EXIT ShareMouse as we experienced, that you otherwise lose mouse clicks. This would then require a hard reset of your Mac.

You may also experience additional macOS security dialogs which you need to confirm.

Troubleshooting video

Watch Troubleshooting video at Youtube

General Troubleshooting

The fastest path to nail down any potential configuration issue is to start from scratch.

To reset the ShareMouse installations to default settings:
  1. Exit ShareMouse on all computers.
  2. Press and keep holding CTRL and ALT and launch ShareMouse.
  3. Repeat above steps on all computers running ShareMouse.
  4. Confirm the prompt to delete all settings.
  5. Consider rebooting the Router/Switch.

Remote Control issues

Keyboard issues

No Windows mouse cursor

Windows OS assumes running on a touch tablet if no physical pointing device is attached and automatically hides the mouse pointer.

Solution: Either connect a physical mouse device or activate "mouse keys" in Windows as a workaround.

Drag & Drop Troubleshooting

Clipboard Sharing Troubleshooting

Performance Troubleshooting

ShareMouse should run as smooth as you can see in our demonstration video as we also use off-the-shelf hardware.

If you experience high CPU load on a Mac, disable ShareMouse option "Settings » Keys » Secure input warning"  and restart your Mac (learn more).

If mouse cursor or keyboard input is sluggish or delayed, try following suggestions:

Use with virtual PCs

If you wish to use ShareMouse within a virtual machine session running on a remote computer, you may need to install ShareMouse within the virtual machine session.

You may need to exit ShareMouse on the remote host PC to avoid interference with the vm session.

Also make sure to use a "bridged network connection" between host computer and the vm session to enable ShareMouse accessing the session.

If using an Apple Mac with the virtualization software "Parallels", issues with modifier keys SHIFT, CTRL and ALT are known. Workaround: In ShareMouse, disable "Simulate modifiers as Flag event" under Settings » Keyboard.

Networking Troubleshooting

Quick help for IT Pros

Network ports TCP 6555 and UDP 1046 must be open for ShareMouse on all computers.

This step-by-step Troubleshooting assists you if you cannot establish a network connection at all:

Verify general network functionality

Ensure that all computers have the TCP/IP protocol installed:

Find out the IP addresses

To continue troubleshooting, you need to know the IP address of the computers. These are the unique IDs under which the PCs can be identified and reached on the network:

Check basic network communication

Now, try to call the opposing computer with the ping command:

Check for port conflicts

In very rare occasions, it may be that the UDP port being used by ShareMouse are already occupied by another application:

Still no joy?

We are sorry to hear that and we are aware, that computer networking can be tricky.

We kindly ask for your understanding, that the low license fee does not include individual computer network consulting services. The complexity of possible hardware/software configurations makes it impossible for us to provide individual support on network configuration issues. A stable and working network connection is considered a basic system requirement for ShareMouse.

Please ask your local IT administrator for assistance or check out networking tutorial websites for help.