Issue Reported:

Many device are from particular group stop reporting to wsus console.

Solutions:

Step 1: Tried to re register with this command(wuauclt /detectnow resetauthorization /reportnow).

Step 2: Validate Issue reported device WindowsUpdate.logs found below major errors. 

Step 3: By seeing above error. we have created different group and moved issue reported device to the new groups.

Step 4: Perform below step to re register.

• Stop windows update services

• Run regedit and go to KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate

• Delete the PingID, SUSClientID and the AccountDomainSID values

• start the Wuauserv Service

• From the command prompt run: wuauclt /resetauthorization /detectnow /reportnow

Step 5: After perform step 4, Verify device on wsus console device start reporting to the wsus.

Happy learning!!!

Thanks&regards,
Haresh Hirani
Email: [email protected], [email protected]
Facebook https://www.facebook.com/Hiraniconfigmgr-120189361980772/
Follow us: https://www.linkedin.com/in/hiraniconfigmgr 
Twitter: https://twitter.com/hiraniconfigmgr