Any ideas to make it work? happens with different versions
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Try to install vc_redist.x86.exe if you’re on 32-bit Windows or vc_redist.x86.exe and vc_redist.x64.exe if you’re on 64-bit Windows from Latest supported Visual C++ Redistributable downloads | Microsoft Learn, then reboot your computer and open Anki again.
How can I tell if my computer is running a 32-bit or a 64-bit version of Windows?
32-bit and 64-bit Windows: Frequently asked questions - Microsoft Support -
If it doesn’t work, try When Anki doesn't start on Windows (debugging steps) / Problems / Knowledge Base - AnkiMobile (iPhone/iPad) Support
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As far as I know, Anki 2.1.15 should work just fine, but I recommend to try the previous steps at first.
FWIW, I’m still using Windows 7 on laptop and all Anki versions works fine for me as long as I install the alternate version since my laptop is 32-bit.