: If purchased online, search your inbox for an order confirmation from Adobe or the authorized retailer. Installation Media
Adobe’s activation servers for version 11 are no longer fully supported. Even with a "working" key, the software may fail to validate or revert to trial mode after a few days. adobe acrobat xi pro 11 serial key
: Search your email history for a purchase confirmation from Adobe or an authorized retailer, which typically contains the product key. Adobe Licensing Website (LWS) : If purchased online, search your inbox for
Your Activation Key is invalid
There are a couple reasons why this might have happened:
1) you don’t have an activation key and entered a fake one
2) you entered the wrong code
3.) You didn't sign up properly
Please double-check that you have downloaded your activation key according to the instructions in the tutorial video.