Grauer Hintergrund

Hi @Marcel269805107nuh 

Hope you are doing well and sorry to hear that

What is the workflow/steps you are doing to add the signature? A small video recording of the same would be very helpful.

Is this an issue with a particular PDF file or with all the PDFs? 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 locally and then try again.

What is the version of the Acrobat DC you are using? To check the version go to Help > About Acrobat and make sure you have the recent version 23.03.20269 installed. Go to Help > Check for updates and reboot the computer once.

Also try to repair the installation from the help menu (Win Only) and see if that works.

Please try to reset the Acrobat preferences as described here https://community.adobe.com/t5/acrobat-discussions/how-to-reset-acrobat-preference-settings-to-default/td-p/4792082

You may also try to create a new test user profile with full admin rights in Win or enable the root account in MAC and try using the application there and check.

Let us know how it goes

~Amal