Cannot launch this app

[robingranite]

Thanks Lwouis! This is a wonderful app I used everyday!

However, today this app(alt-tab-macos version 4.1.2) cannot start in a new MacBook. No icon displayed on status bar. Cannot find this app in Activity Monitor. I tried both downloading app directly and making the app by using homebrew. Same version works fine in an old MacBook.

Both new and old MacBook OS are "macOS Catalina version 10.15.5". The old MacBook is "MacBook Pro 15" 2017". The new MacBook is "MacBook Pro 16", 2019".

Hope you can give me some advice to launch this app in the new MacBook. I cannot use a MacBook without this app! Thanks a lot!

Regards,
Robin Hu

[lwouis]

Hi @robingranite! Thanks for sharing this issue!

From your description, my best guess is that you didn't see/get the prompt for the System Permissions when you started the app the first time, and on further attempts, macOS has a bug/poor-ux where they don't show the prompt ever again.

We have a ticket to improve this experience #127.

For the here and now, try one of these approaches:

• Better system permissions onboarding #127 (comment) (run the tccutil command, then launch AltTab)
• AltTab doesn't ask for ScreenRecording permission on 10.15.4 #340 (comment) (Seems extreme but it seems it was necessary to reset PRAM for that user)

Please let me know if that helped you work around the issue :)

[robingranite]

Hi @lwouis!

Thanks for your quick response! It comes back! Wonderful! Thank you very much!

I referred the issue #127 and ticked the check box of AltTab in system Preferences -> Security & Privacy -> Screen Recording. Now It works!

I installed the new MacBook by using Migration Assistant. I guess something wrong happened of the permission of screen recording in this process.

Thank you!
Robin Hu

[lwouis]

Glad that did it for you! Hopefully we implement a more robust handling of permissions in #127, to work around Apple lacking UX, and these issues never happen again