Troubleshooting

Having trouble with VirtualTablet? Find solutions to common connection and setup problems here.

Installation Failure

If you encounter installation failures with error codes like 0x80070643 as shown below, first verify that your account has administrator privileges.

If the same issue occurs even when installing with an administrator account, please navigate to the following path and send all .log files starting with VirtualTablet_Server_ to [email protected]. We will help identify and resolve the issue as quickly as possible.

• Log file path: C:\Users\[username]\AppData\Local\Temp

AppData is a hidden folder, so it may not be visible when you access the [username] folder. In this case, you can either check 'View' > 'Show' > 'Hidden items' in Explorer menu, or click on the empty space in the Explorer address bar and directly enter the path above.

Connection Issues

Cannot Connect with Your IP?

Common causes and solutions:

• Different networks: Ensure both devices are on the same WiFi
• Firewall blocking: Allow VirtualTablet through Windows Firewall
• Router isolation: Some routers prevent communication between devices
• VPN disabled: VPN can cause communication errors between devices when enabled

If you cannot connect even though your PC and tablet are on the same network, the issue is likely with your Windows Firewall settings.

Solution Steps:

1. Open Windows Firewall settings
2. Add VirtualTablet Server to the allowed applications list
3. Ensure both private and public network access are enabled
4. Restart VirtualTablet Server and try connecting again

Cannot Find Server Automatically over WiFi?

Even if automatic server discovery isn’t working, you can still have chance to connect manually:

Performance Issues

How to Minimize Cursor Delays

Experiencing lag or delays when using WiFi connection? Here are proven methods to improve performance:

1. Optimize Physical Distance

• Keep your PC, router, and tablet physically close together when using WiFi connection
• Reduce obstacles between devices (walls, furniture, electronic interference)

2. Try WiFi Tethering

• Create a direct connection between devices without going through a router
• Bypass network congestion and router limitations

3. Use USB Tethering

• USB tethering provides the fastest, most stable connection for Android devices
• Eliminates WiFi network variables and provides consistent performance

4. Try USB Connection (Recommended)

• USB tethering and a direct USB connection via ADB are completely different methods.
• This method requires enabling Developer Options on your Android device. Once set up, it’s easy to use and offers stable, consistent performance.

Occasional drops or micro-stutters even with a strong signal? (Windows Wi-Fi roaming)

If the cursor briefly freezes while you draw, or the connection occasionally drops and reconnects even though your Wi-Fi signal is strong, Windows Wi-Fi roaming behavior may be the cause.

In environments with more than one access point (mesh Wi-Fi, offices, etc.), Windows periodically scans other channels to check whether a better access point is available. During each of these brief scans, data transfer pauses for a moment — causing micro-stutters — and if roaming is too aggressive, Windows may switch access points mid-session, briefly dropping the connection.

A PC that stays in one place rarely needs to roam, so lowering the Roaming Aggressiveness can greatly reduce these symptoms.

How to change it (Windows):

1. Press Win + X and open Device Manager
2. Expand Network adapters, right-click your Wi-Fi adapter → Properties
3. Select the Advanced tab
4. In the property list, select Roaming Aggressiveness (or Roaming Sensitivity Level)
5. Change the value to Lowest (or Disabled)
6. Click OK, then reconnect VirtualTablet

Driver Issues

Do I need to install drivers?

• Windows: VirtualTablet HID drivers are installed automatically during setup
• Mac: No additional drivers needed
• USB connection: Requires ADB drivers on Windows

Verify HID Driver Installation (Windows only)

1. Open Device Manager
2. Look for Human Interface Devices
3. Verify VirtualTablet HID driver is present

Connection is successful, but cursor does not move?

If your stylus isn’t functioning properly, check these items in order:

1. Driver Installation
   • Ensure you allowed driver installation during VirtualTablet Server setup
   • If you declined, uninstall and reinstall the server

2. Reboot Required

   • You must reboot your computer after installing VirtualTablet Server
   • The pen driver won’t work without a restart

3. Reinstall if Needed

   • If problems persist after reboot, completely remove VirtualTablet Server
   • Reinstall with administrator privileges

FAQs

Can I use a tablet with finger touch?

VirtualTablet focuses on stylus input. Finger touch:

• Can be used but won’t have pressure sensitivity
• Does not support absolute cursor movement like graphic tablet (only relative movement possible)

Still Having Issues?