Windows 11 - Calibre hangs on first launch, but works fine on second attempt

[WinterPhoenix]

I’ve run into an issue with Calibre on Windows 11. The first time I launch it after starting my computer, the startup window appears, but then stops responding. Windows prompts me to close the program. However, when I try opening Calibre again immediately afterward, it starts up normally within a couple of seconds.

Is this a known issue? And is there a way to prevent the initial hang on first launch?

[JSWolf]

Originally Posted by WinterPhoenix

I’ve run into an issue with Calibre on Windows 11. The first time I launch it after starting my computer, the startup window appears, but then stops responding. Windows prompts me to close the program. However, when I try opening Calibre again immediately afterward, it starts up normally within a couple of seconds.

Is this a known issue? And is there a way to prevent the initial hang on first launch?

What version of calibre are you using? 8.11.1 is the current version. I run Windows 11 on my laptop and mini-PC and one is Windows 11 Home and the other in Windows 11 Pro and I've never seen such a problem. I'm running 24h2 on both computers.

Try calibre in safe mode. If it starts first time, it's something you are running causing the problem.

[WinterPhoenix]

Originally Posted by JSWolf

What version of calibre are you using? 8.11.1 is the current version. I run Windows 11 on my laptop and mini-PC and one is Windows 11 Home and the other in Windows 11 Pro and I've never see such a problem. I'm running 24h2 on both computers.

Try calibre in safe mode. If it starts first time, it's something you are running causing the problem.

I was using 8.7, and the issue had persisted through at least a few versions before that. Apparently they fixed it at some point though, so thank you for reminding me to check.