Repeated login in requests

[Mike Clements]

Every time I open a PDF file I get a dialog box asking for the last 4 digits of my 'phone number.  then I receive a 'phone text and I put in the code number on my PC, then I get a password request to log in.  I thought the login credentials were a one-off requirement, yet I get the request every time I open a file after closing Adobe.

Any ideas, it's very annoying.

[Test Screen Name]

Which Adobe app (Acrobat Reader DC, Acrobat Pro DC, Acrobat Pro 2017, other) is used on your system, when you try to open a PDF? 

[Mike Clements]

Adobe Acrobat Reader DC

[Oliver Sparrow]

If you use Piriform CC Cleaner, look to see whether the option "Erase saved passwords" is checked. This has the effetc of removing saved adobe credentials, and so endless log ins.