serial number

Are you using the original installation media?

Did you deactivate first?

When you can't deactivate a serial number
BE SURE TO ONLY ASK FOR ACTIVATION SUPPORT TO ADJUST YOUR ACTIVATION COUNT
You may need to PERSIST or TRY AGAIN to find a support agent with more experience

Be sure to remain signed in with your Adobe ID before accessing the link
Do be aware that Adobe's staffing is impacted by the virus, so wait times are long
-make sure that your browser does NOT block ads, scripts, or pop-ups
-you must also allow 'cookies' in your web browser for this to work
https://helpx.adobe.com/contact.html?rghtup=autoOpen
.
Also: beware of answering anyone who sends you a private message
-click for more information about scammers https://tinyurl.com/10791730

If you have registered your product you'll find the serial number under your Adobe account.

Login on the Adobe's website with your Adobe ID and goto to Abo -> Products.

If you don't registered your software you have to contact the Adobe support.

You can also take a look here.

Gelöst: This serial number is not valid for this product - Adobe Support Community - 9152988

Error: "The serial number is not valid for this product" | Adobe Creative Suite