Hello,
To resolve this issue, you can try the following steps:
- Check if the server has an active internet connection.
- Verify that you are using a valid product key for Windows Server 2022 Standard Edition.
- The DISM command is as follows:
DISM /online /Set-Edition:ServerStandard /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula
More details please refer to this link:
Upgrade and conversion options for Windows Server | Microsoft Learn
Regarding the issue with applying Cumulative Windows Server 2022 Updates from Windows Update, you can try the following steps:
- Run the Windows Update troubleshooter. You can access the troubleshooter by going to Settings > Update & Security > Troubleshoot > Windows Update.
2.Can you manually download and install the updates from the Microsoft Update Catalog?
3..Restarting the update services. You can do this by using the Services tool (services.msc) and stopping and starting the following services: Windows Update, Background Intelligent Transfer Service, and Cryptographic Services.
Best Regards