I keep getting this pop-up and it just freezes and I have to force quit.
Tried reinstalling and using the cleaning tool, and tried different hard drives, but no luck.
Thank you for reaching out, and sorry about the trouble caused.
Please try the troubleshooting steps suggested in the following help document: https://helpx.adobe.com/x-productkb/global/troubleshoot-system-errors-freezes-windows.html.
If the issue still occurs, try reinstalling Acrobat from the following page: https://helpx.adobe.com/acrobat/kb/acrobat-dc-downloads.html.
Let us know how it goes.