Editing on pdf files

[Moderator moved from Using the Community (forums) to Acrobat.]

Did you consult the system requirements to ensure your software is compatible with Win 11?

https://helpx.adobe.com/br/download-install/kb/windows-11.html

Did you buy a new computer with Win 11 factory installed? 

If not, did you check your PC Health before you upgraded?

Or are you using Photoshop or Photoshop Elements?

Please tell us what Adobe application you are using so that this can be moved to the proper forum for help.

What version of Acrobat Pro or Acrobat Standard do you have a subscription to? Or do you have a perpetual license? You need to install the software you paid for. DO NOT install Acrobat Reader instead.