I have Adobe Acrobat Pro DC, can I downgrade the same to Adobe Acrobat XI standard or X standard version with using same license key?

[ITEISAIINDIA]

I have Adobe Acrobat Pro DC, can I downgrade the same to Adobe Acrobat XI standard or X standard version with using same license key?

[Doug Hanna]

In a word, but not to be rude, No.

While you can install an older version of the software under a newer license, Adobe does not provide the older version installers nor license keys.

Doug