All my CS6 programs activate except Acrobat X Pro

[my613]

I have Windows XP. I installed Adobe CS6 Design Standard and registered my license key with Adobe.com where it shows up successfully. All my programs are successfully activated with one exception: Adobe Acrobat X Pro. Adobe Acrobat X Pro rejects my serial number as "not valid for this product" and returns an error when I try registering with my Adobe ID from the Help menu. It remains stubbornly stuck as a trial. I chatted with an Adobe tech and that got me exactly nowhere. What do ​I do?

[kglad]

you may have a separate disc (from your suite) for acrobat x pro.  in that case you'll have a different serial number (from your suite) for acrobat x pro.

if your acrobat x pro was not on a separate disc, you should install from your suite installation files using the suite's serial number.

[my613 · Accepted solution]

It was from my suite and I was using my suite's serial number. What worked for me in the end was to deactivate the suite from my computer through one of the regular suite programs (Indesign, Illustrator, Photoshop) and then activate again using my Adobe ID in that same program. When I did that, Acrobat X Pro became activated as well. Not sure what went wrong to begin with, but this fixed it.

[kglad]

if you activated your suite before installing acrobat, that could cause the issue you faced (and account for your solution).

in any case, congrats on solving that!