Unable to modify group policy

Hi All,

I have the below error when I try to add trusted sites on site to zone assignment list. (see the capture below). See below what I tried:

• When I go in to modify the SiteToZoneAssignmentList setting in a group policy, I get the error in this thread. Screenshot is in line. It does seem to go away after a random amount of time, typically longer than five minutes but within an hour.
• I have re-created this policy from scratch  and that worked for a short time. But the issue is presenting itself again.
• This issue also presents itself at the same time to other users when they try to make a change to this policy, so it’s not limited to my machine, server or account.

I know there is a similar thread with this one, but I tried what they ask for, but it didn't work.

The below procedure didn't work.

"The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)
Now open up gpedit.msc on the problematic server.
User Configuration > Administrative Templates > System > Group Policy
Change the following policy
"Group Policy domain controller selection"
Enable this and set it to use "Use any available domain controller"
Close gpedit.msc and run gpupdate /force
Try to deploy policy again."

The error is this one:

Getting this error message, same as before:

Text of Details:

See the end of this message for details on invoking

just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************

System.IO.FileLoadException: The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)

   at Microsoft.GroupPolicy.AdmTmplEditor.IGPMAdmTmplEditorCallback.ApplyChanges()

   at Microsoft.GroupPolicy.AdmTmplEditor.Editor.SaveChanges()

   at Microsoft.GroupPolicy.AdmTmplEditor.Editor.buttonOK_Click(Object sender, EventArgs e)

   at System.Windows.Forms.Control.OnClick(EventArgs e)

   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)

   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.ButtonBase.WndProc(Message& m)

   at System.Windows.Forms.Button.WndProc(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************

mscorlib

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.5466 (Win7SP1GDR.050727-5400)

    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/mscorlib.dll

----------------------------------------

Microsoft.GroupPolicy.AdmTmplEditor

    Assembly Version: 6.1.0.0

    Win32 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850)

    CodeBase: file:///C:/Windows/assembly/GAC_64/Microsoft.GroupPolicy.AdmTmplEditor/6.1.0.0__31bf3856ad364e35/Microsoft.GroupPolicy.AdmTmplEditor.dll

----------------------------------------

System

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.5467 (Win7SP1GDR.050727-5400)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll

----------------------------------------

System.Windows.Forms

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.5468 (Win7SP1GDR.050727-5400)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

----------------------------------------

System.Drawing

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.5467 (Win7SP1GDR.050727-5400)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

----------------------------------------

System.Xml

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll

----------------------------------------

Accessibility

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)

    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll

----------------------------------------

************** JIT Debugging **************

To enable just-in-time (JIT) debugging, the .config file for this

application or computer (machine.config) must have the

jitDebugging value set in the system.windows.forms section.

The application must also be compiled with debugging

enabled.

For example:

<configuration>

    <system.windows.forms jitDebugging="true" />

</configuration>

When JIT debugging is enabled, any unhandled exception

will be sent to the JIT debugger registered on the computer

rather than be handled by this dialog box.

Can someone help me please?