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Are you logged in as a domain administrator? &nbsp;I have seen this where it is a permissions issue
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Are you logged in as a domain administrator?  I have seen this where it is a permissions issue

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Ran DCDIAG which is completely clean, All passed.
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Ran DCDIAG which is completely clean, All passed.

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Yes I am logged in as Admin, Tried two admin accounts. &nbsp;Same result.
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Yes I am logged in as Admin, Tried two admin accounts.  Same result.

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Wouldn't by chance have an antivirus blocking group policy. &nbsp;I have had symantec do that with version 11
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Wouldn't by chance have an antivirus blocking group policy.  I have had symantec do that with version 11

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Nothing was added like that recently. &nbsp; We use ESET which has been installed for years.
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Nothing was added like that recently.   We use ESET which has been installed for years.

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Win2k3 R2 Standard Server SP2. &nbsp;PDC, I can browse to server from workstations and sysvol share with no issuse. &nbsp;I can not create or edit any GPO including Default Domain policy. &nbsp;As soon as I click on it the above error generates.
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Win2k3 R2 Standard Server SP2.  PDC, I can browse to server from workstations and sysvol share with no issuse.  I can not create or edit any GPO including Default Domain policy.  As soon as I click on it the above error generates.

The Specified network name is no longer available error when Trying to view/edit GPO

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.