SCCM Client Reporting Issues - Updates not showing, etc.

I've had some issues where the SCCM agent isn't reporting back to the management server correctly. This could manifest symptoms like

• No updates showing
• No software deployments showing
• Reporting data not being gathered

The fix we found is to delete the Registry.pol file from C:\Windows\System32\GroupPolicy\Machine

We even went so far as to create an uninstall batch file that incorporates this fix

del "C:\Windows\System32\GroupPolicy\Machine\Registry.pol"

ccmsetup.exe /uninstall

After uninstalling the client and reinstalling, the issue is fixed.