Re: Adobe Acrobat subscription validation error.

Please try the following steps and let me know if that helped.

Delete all the files from following folders:

C:\PrgroamData\Adobe\SLStore

C:\Program Files (x86)\Common Files\Adobe\SLCache

And, delete all files from following folder except cache.db

C:\Program Files (x86)\Common Files\Adobe\ Adobe PCD

Then launch Acrobat, Accept EULA and enteryour Adobe ID to license the software subscription.

Regards,

Rave