Hi Stivi,

Have you configured the Network Policy Server role correctly ?

Due to a problem identified by Microsoft with Windows Server 2008, an incorrectly configured Network Policy Server (NPS) results in the writer incorrectly reporting files to the NetWorker software. As a result, the backup of the VSS SYSTEM SERVICES might fail with that error you mentioned in your post. Note that IAS.xml file is part of the Network Policy Server (NPS) VSS writer.

This is a known Microsoft issue for VSS backups if you have a NPS role not configured properly, here is Microsoft KB article about that:

http://support.microsoft.com/kb/949470

So you have to check if the NPS role is configured correctly or not , or do you need this role on that machine or deactive/uninstall it.

More information regarding NPS can be found at this Microsoft article:  http://technet.microsoft.com/en-us/library/bb694190.aspx

Waiting your updates.

Thanks,

Ahmed Bahaa

Hi Ahmed

I know that unfortinatly are the Windows Admins not interested in doing that.

They like to know if the rest of the Backup is OK.

So that they can do a full restore exept this single file.

Regarts

Stivi

Hi Shuegli,

To be specific to your question. The backup for a particular VSS save set stops when it encounters such error and will not be usable to perform a restore.

My suggestion is to create dummy file "ias.xml" (using  notepad) under "C:\Windows\system32\ias" folder and restart the volume shadow copy service.

Run the backup again and it should complete. Once the backup is successful you can notice the difference in size of the save set.

Hope this helps.

Deepak

Hi Deepak,

Just to add an information, that the ias.xml file is the file that contains the NPS configurations , so if you created a dummy file with that name under the same directory , the NPS role will remain as it is not configured properly. This is Microsoft issue, may be Microsoft has another workaround , but the clear solution is to re-configure the NPS correctly.

For more information about the ias.xml and NPS architecture, you can check the following Microsoft link :

http://technet.microsoft.com/en-us/library/dd197439%28v=ws.10%29.aspx

Thanks,

Ahmed Bahaa

Thanks Ahmed

Hi all,

Despite this is answered already, I would like to remind you the potion to avoid these error messages when VSS is missing any system file. You need to set the backup command (only for NW client, not for NMM):

save -a '"ignore-all-missing-system-files=yes"'

If it's NMM instead of NetWorker client, then you need to add the following variable in the Application information field of the client's configuration:

NSR_IGNORE_MISSING_SYSTEM_FILES=yes

Thank you.

Carlos.