APC Index Mismatch when opening Outlook attachment after update Windows 10 1903

Hi to everybody,
after upgrading my Windows 10 to version 1903 (build 18362.175) I get a blue screen each time I try to open some kind of attachments in Outlook 2016 (version 1905 buld 11629.20246) for example PDF files or double-clicking on links in the email body.

The error message is APC_INDEX_MISMATCH without any sub-code or specific file name or other information

If I temporary turn off the Avast protection I can open the same attachments or links without any problem.
Avast is updated to version 19.5.2378 (build 19.5.4444.505)

What can I do?
Thanks in advance

Thank you for reporting this, the fix is ready, it will be released soon, probably today or tomorrow.

The fix is now out.

Update your virus definitions and reboot your computer.

https://screencast-o-matic.com/screenshots/u/Lh/1561147083524-86990.png

I tried but the program doesn’t find any update

Have you restarted your computer ???

No more problem after definition ver. 190622-2