In Group Policy Editor I cannot create new Group Policy Preference items in the Control Panel Settings (Data Sources to Start Menu in Group Policy Management Editor).
I was trying to create a file association (Folder Options > Open With but no dialog box appears when I click on this. Interestingly, it does appear with Printers and Internet Options.
I think that this information is contained with the file C:\Windows\System32\gpprefcl.dll as per the registry showing GPExtensions and this file definitely exists (albeit a different size/version to one on another server with the same OS). I have tried a few
things including re-registering that .DLL but I'm not sure it's needed. RegDllView doesn't show this file as registered on either server (one that doesn't work, and one that does) despite the regsvr32 success message.
Any ideas?
EDIT: It seems like others have experienced this issue before, https://social.technet.microsoft.com/Forums/en-US/25ea05c6-b885-4ee0-87af-efce2367f594/unable-to-create-new-items-in-group-policy-preferences?forum=smallbusinessserver