Event ID 1085; Source GroupPolicy - Windows failed to apply the Microsoft Disk Quota settings – RESOLVED



Group Policy applies during computer startup and user logon. Afterward, Group Policy applies every 90 to 120 minutes. Events appearing in the event log may not reflect the most current state of Group Policy. Therefore, you should always refresh Group Policy to determine if Group Policy is working correctly.

To refresh Group Policy on a specific computer:

1. Open the Start menu. Click All Programs and then click Accessories.

2. Click Command Prompt.

3. In the command prompt window, type gpupdate and then press ENTER.

4. When the gpupdate command completes, open the Event Viewer.

Although you do not necessarily define Disk Quotas on your system – it can happen that you get Event ID 1085 “Windows failed to apply the Microsoft Disk Quota settings. Microsoft Disk Quota settings might have its own log file. Please click on the "More information" link.”

Therefore – you will have to check which GPO contains Disk Quotas (if enabled) or which policy contains Disk Quota Extensions (even though Disk Quotas are not enabled). Most of the times, the DefalutDomainSettings GPO keeps these data stored.


When you set Disk Quota policy to enable or disable, gPCMachineExtensionNames attribute of the GPO is set the following.



And you set Disk Quota policy to unconfigure, above setting should be deleted.

But the below value remains. Then you see event ID: 1085 when the GPO is applied.



You can resolve this, by deleting the remaining value with adsiedit.msc.


1. run adsiedit.msc (https://technet.microsoft.com/en-us/library/cc773354(v=ws.10).aspx )

2. edit gPCMachineExtensionNames attribute for the GPO.

DC=<Doman DN>



    CN={GUID for the GPO} <<== if the GPO is " Default Domain Policy", the GUID is 31B2F340-016D-11D2-945F-00C04FB984F9.

3. delete the following value from gPCMachineExtensionNames attribute


(Yes….the one starting with 3610)

4. reboot the computer or "gpupdte /force"


Happy Troubleshooting.