Adobe applications asking for Serial Number

Question

It looks like a license has expired in our organization.
The license information on the admin portal is still valid until late 2023

A lot of older Adobe installations do not work anymore, upon starting the application e.g. Adobe Acrobat, the user is prompted for a Serial Number. But also the most recent versions.

We are using the most recent version (MSP) of Adobe Acrobat, but also other Adobe application are affected, and somewhat older versions
We have run RemoveVolumeSerial.exe on an affected machine, no positive result
The user has a valid license (adminconsole.adobe.com)
This information has not helped us
The user keeps getting serial dialogs like this:

Note, the dialogs are different, but they alle have to do with signing in or entering a serial.

Business Impact is very high

Megha23805187lz72 · Accepted Answer

1: Close all the Adobe processes from the Task Manager including the process related to the Creative Cloud desktop app.
2: Go to Registry Editor to the location HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Adobe Acrobat\DC\Activation
Create a new registry key at the below location -
Path : HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Adobe Acrobat\DC\Activation
Create a new DWORD: IsNGLEnforced
DWord 32 bit, set the value to 1

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