Acrobat reader DC keeps crashing; text in comments changes size (huge or tiny) for no apparent reaso

Hi there

Hope you are doing well and sorry for the trouble. As mentioned Acrobat Reader DC application is crashing when you try to annotate the PDF. You have also tried to repair and update the application with no luck.

Is this a behavior with a particular PDF file or with all the PDFs that you try to annotate? Please try with a different PDF file and check. If the file is stored on a shared network/drive please download it to your computer first and then try to annotate and check.

Please try to turn off the protected mode for testing (Win Only) and reboot the computer once . Go to Edit > Preferences > Enhanced Security > Uncheck 'Enable Protected mode at startup' Turn off the protected mode and uncheck 'Enhaced Security' > Click OK

Note: Please turn on the security after testing to avoid any security risk.

You may also try to reset the acrobat preferences as described in the help page https://community.adobe.com/t5/acrobat-discussions/how-to-reset-acrobat-preference-settings-to-default/td-p/4792082 and check.

Also, try to create a new test user profile with full admin rights in Windows and try using the application there

Also check the help page https://helpx.adobe.com/acrobat/kb/acrobat-dc-crashes-on-windows-os.html

Regards

Amal

Some additonal info: Windows 10 Home version 21H1 (OS build 19043.1202)

Acrobat reader DC: Continuous release. Version 2021.005.20060

64-bit operating system