Help

When it won't work, narrow it down step by step.

Check apps → discovery → firewall → pairing → input in that order.

The return key below is the default. If you changed it in PC Settings → Shortcuts, use your saved key. If all shortcuts or emergency return are off on the main PC, return across the screen edge. See shortcuts and their conditions

Start with these two

Lost your cursor? → Press Ctrl+Alt+Backspace and the cursor returns to your own PC (center of the monitor).
Connected but input isn't working? → Re-enable OneMouse under Android Accessibility. For Mac, check its input permission.

Troubleshooting order

Check one step at a time, in this order.

Power and permissions

Check that both apps are running. For input permissions, see the quick checks.

Same network & discovery

Check that both devices are on the same Wi-Fi or LAN. For Mac discovery, see Mac help.

Firewall & isolation

If the phone can see the PC but the PC can't see the phone, it may be a Windows firewall inbound issue (whether the network is set to "Public" or "Private"). Office and café Wi-Fi can also block it with client isolation.

Pairing & connection

Check pairing and connection status in Devices. For the first connection, follow the setup guide.

Input & return

If the cursor will not cross the edge, check the arrangement. Lost it? See how to bring it back.

Transfer

When files and clipboard won't go through.

Confirm the selected device is correct — a transfer goes to the target you selected.
Desktop-to-desktop drag requires the target Windows PC or Mac to be connected and arranged. Mac edge drag currently uses LAN.
Keep holding the file, cross the arranged screen edge, and drop it on the target to start the transfer.
If the clipboard doesn't come through, check that both apps are connected and whether a screen is off and idle.
Bluetooth is slower than Wi-Fi — send large files over Wi-Fi.

Phone notifications

When phone notifications don't show on the PC.

In the phone app's Notifications to PC settings, turn on Send notifications to PC and check that Notification access says allowed.
Check that the app is in Apps to send to PC. The defaults are your SMS app and KakaoTalk; you can also choose all apps.
On the main PC, open Settings → Notifications and make sure Device notifications is on.
If only verification-code messages arrive as "hidden", that is Android 15's protection. In the phone app's Verification-code notifications block, tap Register PC once. Bluetooth is only needed while registering.

Notification history and deletion

Notifications appear briefly; history is encrypted locally on the PC, never uploaded. Only notifications received after enabling are recorded; verification codes and hidden sensitive content are not saved.

History defaults to on, 7 days, and up to 200 entries. Main-PC Settings → Notifications offers 1/7/30 days or no new entries. Existing history stays; Clear all deletes it.

Mac · Troubleshooting

Checks for the public macOS 13+ app.

Install the public Apple Silicon build and start the LAN connection from OneMouse on Windows.

The Mac does not appear in Windows Devices.

Put both computers on the same Wi-Fi or LAN. On macOS 15+, allow OneMouse under Privacy & Security → Local Network; macOS 13/14 may not show this item. Return to OneMouse and refresh Devices in Windows.

The Mac is connected, but mouse and keyboard input do not work.

Allow OneMouse under macOS Privacy & Security → Accessibility, then return to the app so it can recheck the permission. Basic input receiving does not require Input Monitoring.

The Mac screen is blank in the Windows remote-control window.

Allow OneMouse under macOS Privacy & Security → Screen & System Audio Recording. This optional feature is LAN-only and is not provided over Bluetooth; OneMouse does not capture system audio.

Can Windows and Mac connect over Bluetooth?

Yes, as a beta: enable Bluetooth in the Mac app settings (off by default). LAN remains the officially supported path. Mac screen and window sharing is LAN-only.

Where do I start a Mac connection?

Follow the Mac connection guide.

Frequently asked questions

The most common problems.

The Reply button is missing, or my reply will not send.

PC and Android need reply-capable versions and an original phone notification with free-text reply. Only live main-PC notifications qualify; hidden/sensitive content, verification codes, and history are excluded.

If sending fails, check the phone lock, deleted/expired notification, and connection. Failures and timeouts are not automatically resent; check the phone conversation. “Passed to phone app” confirms the original app's reply action, not delivery to the recipient. See how to reply

How do I change device numbers if Edit order is missing?

Edit order appears in main-PC Devices with two or more LAN devices. It saves automatically and updates connection/remote-window numbers, not screen arrangement or key combinations. Bluetooth order stays unchanged; sub-role PCs cannot edit. Change device order

Browser gestures do not work in a Windows remote window.

Use OneMouse for Windows 1.5.4 or later and enable the target browser's gesture extension or feature. The remote window forwards right-button drags, separately from Android's built-in gestures for direct phone control.

You can open remote windows for multiple devices; repeating a device's shortcut number brings its window forward. See the remote-window guide

A file shared from my phone does not reach the PC.

For Wi-Fi/LAN, choose a main-role Default PC on the phone's Home screen and check pairing/connection (sub PCs are excluded). An existing Bluetooth connection can send without a default PC. Send from phone to PC

I cannot change or open the PC's received-files folder.

On main or sub PCs, use Change/Open folder in Settings → General → File transfer → Received-file save location. For errors, check write access and USB/network drives or choose another accessible folder. Existing files stay put; screenshot saving is separate. See received-folder settings

The pointer does not return after capture, or the preview closes.

With supported versions on both sides, the pointer stays on the controlled device and only a separate preview appears; the main app stays in the tray or minimized. Copy/save success closes the preview; save cancellation or failure keeps it open. Move the pointer back to the main PC to use it.

Mouse gestures do not start.

Use supported PC/Android versions, enable Mouse gestures in Android Settings → Typing & clipboard, and select the current app (off by default). Move the pointer onto the phone, right-drag, then release; this does not apply to Windows/Mac or mirroring windows.

All apps covers installed apps with launcher icons and Home. OneMouse and system screens such as lock/permission dialogs are excluded; supported actions vary by app and screen.

View the gesture guide and all patterns

Forward or Reload does not work.

Forward returns to a page in browser history, not the next article. Reload needs a recognised native browser button; some selected apps or screens do not support it.

Does down → right close the app?

No. Draw down, then right as two strokes, not one diagonal. It goes to Home without closing the app, its tabs, or its recent-app card. Up → right opens the recent-app list so you can choose another app.

How do I adjust and stop up/down scrolling?

A longer up/down stroke scrolls more, a shorter one less; release the right button to start (nothing moves while drawing). The arrow and vertical gauge show direction and stroke strength, not document position or exact distance.

Start over page content. Very short, incomplete, or cancelled strokes do nothing; a short right-click without movement keeps its usual action.
Movement varies by app; Home/app drawer uses one swipe. Other long scrolls use several swipes, up to 8 screenfuls/10 seconds.
Clicking, a new gesture, switching apps, or ending control cancels remaining scrolling. Pointer movement alone does not stop it.

It keeps disconnecting about every 10 seconds.

Check client isolation on guest/office Wi-Fi and the Windows firewall. If it drops while the phone is idle, check battery and sleep settings.

The phone can see the PC, but the PC can't see the phone.

This is usually a Windows firewall inbound issue. If the current network is set to "Public", inbound may be blocked, so switch it to "Private" or allow OneMouse inbound in the firewall.

It works at home but not on office or café Wi-Fi.

Public/guest Wi-Fi often isolates device-to-device communication (client isolation) for security. In that case, devices can't find each other even on the same Wi-Fi. Use a Bluetooth connection or a personal hotspot.

It says connected, but the mouse and keyboard don't respond.

Re-enable OneMouse using the Android Accessibility check.

The cursor is stuck on the phone, another PC, or Mac and won't come back.

Check the emergency return key and its settings.

The connection drops when the screen turns off.

When the screen turns off, the phone's Wi-Fi can go into power-saving or the app can go to sleep due to battery optimization. Setting OneMouse as a battery optimization exception on Android keeps it stable. Also check the keep-screen-on option while connected.

Bluetooth connection or remote screens do not work well.

For connection issues, remove the existing pairing in both devices' system Bluetooth settings, then pair again. Use Wi-Fi or LAN for large files and mobile remote screens. Mac screen/window sharing is LAN-only. Bluetooth setup steps

Back to the guide