Troubleshooting Casttit

Find what you see, then the fix. Still stuck? Send us your logs (the last section) and we'll help.

Installing

"Windows protected your PC"

The beta isn't signed yet. Choose More info, then Run anyway. The full release will be signed.

"Smart App Control blocked" Casttit

Smart App Control only runs signed apps, so the beta can't run on that PC yet. Please don't turn Smart App Control off for it: the signed version will run there. Tell us, and we'll let you know when it's ready.

The phone

Casttit doesn't find my phone

• Unlock the phone, and try another cable: some cables only charge.
• Try another USB port, ideally one on the PC itself rather than a hub.
• Close other phone-mirroring or phone-manager apps.
• Android: is the Casttit app installed and open? See Android setup.

More fixes, for Android and iPhone: PC not detecting your phone.

"Your phone is busy"

Another program is holding the phone's USB connection: often Android Studio, scrcpy, adb or a phone manager. Close it and Casttit connects by itself.

A setup screen asks for a driver

That's the one-time USB setup for this phone. Follow it; Windows asks your permission once. If Casttit then says so, unplug the phone and plug it in again.

iPhone: "still set for the last capture"

Unplug the iPhone and plug it in again. If Apple Devices or iTunes is installed, Casttit may ask to set up its iPhone driver once more: let it.

Picture and sound

OBS shows Casttit's buttons, or nothing

Point the Window Capture at [Casttit.exe]: Casttit Preview, set Window title must match, and keep the preview open (not minimised). See Set up OBS. Still black? Black screen fixes.

No game sound in OBS

Turn on Capture Audio in the Window Capture's properties (OBS 30.1 or newer). Desktop Audio records only the Windows default device. More: six fixes for a silent OBS.

No game sound at all

Check the Headset list and the Volume slider in Casttit. On Android, a few games block their sound from being captured; try another game to check.

The picture freezes or stutters

• Try another cable and another USB port first: most freezes are the connection.
• Choose a lower Quality in Casttit.
• Close heavy programs on the PC while you stream.
• A phone's screen that doesn't change (menus, loading screens) sends fewer pictures. That's normal.

Invite messages

"This invite is already used on another PC": an invite runs Casttit on one PC. Choose Move Casttit to this PC (once a month). Other messages: invite codes.

Send us your logs

1. In Casttit: Settings → About → Logs folder. Zip the newest files.
2. Email them to support@casttit.com with your phone and PC models and the time it happened. The logs hold Casttit's own messages, never your gameplay.