Adobe Acrobat Pro 2020 Greyed out "Save" button

[D.J.22268203ju68]

One of my clients computers can't seem to save a pdf using file --> save. It is greyed out as well as the save icon on the task bar. 

More info: they download a pdf from our website and save it to thier desktop. They open the pdf with adobe acrobat pro 2020. They make edits to the pdf. They go to save it and the buttons are greyed out. This client used the save as function to save the file, naming it something different, and that works to save, however, when they open the newly "saved as" file and make further edits, the save button is still greyed out. 

I ran a repair and that didn't help. What are some other troubleshooting steps?

[Bernd Alheit]

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