We will get you connected.

Check that both devices are on the same Wi-Fi network — a phone on mobile data or a guest network cannot see the PC. Some routers block broadcast between devices ("AP isolation" or "client isolation"); turn it off, or use "Connect by IP" with the PC address instead. Confirm the tray icon is running on the PC and that both are signed in to the same account.

The username and password must match the account created on the PC exactly. If you recently reinstalled the PC app, its certificate changed and the phone will refuse the connection to protect you — remove the PC from the list on the phone and connect again to trust the new certificate. Also check whether the device limit for your account has been reached.

Allow it on private networks. ZRemote uses UDP 45455 for discovery, TCP 45454 for commands and TCP 45456 for screen streaming. If you dismissed the prompt, add the exception manually in Windows Defender Firewall.

Lower the quality in the selector at the top of the streaming screen, move closer to the router, and prefer 5 GHz Wi-Fi. Current capture runs at roughly 7–12 fps by design; hardware capture with H.264 is on the roadmap.

Keys can be locked to a single PC. If you changed computers or reinstalled Windows, the machine ID changed and the key needs to be reissued — send us the new ID from the tray menu ("Copy this machine ID") and we will sort it out.

On the PC, open the tray menu and choose "Reset app devices". Every phone will need to sign in again, freeing all the slots.