Re-activation Failure of Photoshop CS 5.1 and more

[wmcpohl@aol.com]

Since a few days all of my registered CS 5 versions of Photoshop, Premiere and Audition do no longer function properly.
All show up as expired test-versions, do not accept registered serial numbers. New installation from disk does not solve the problem.
Has anyone have an idea what has gone wrong here?
Wolfgang

[Cari Jansen]

You might need to contact Adobe support for this one (have your original purchasing details, serial number and Adobe ID ready): contact-bumper https://helpx.adobe.com/au/contact.html

Before you do that try the following:

• Did you have the software installed on an older computer, and possibly not deactivate the license before transferring it?  (Help menu> Deactivate).
• Try running CS5 Cleaner Tool, and then reinstalling the software.  see: Adobe - Adobe CS5 Clean Tool