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Windows VSS Writers and Corresponding Service Names

KB ID: 2041
Published: 2015-06-04
Last Modified: 2021-10-05
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Purpose

This article documents VSS Writers and their corresponding Windows services.

For more information, reference Microsoft's In-Box VSS Writers article.

Solution

VSS Writer Name Service Name Service Display Name
ASR Writer VSS Volume Shadow Copy
BITS Writer BITS Background Intelligent Transfer Service
COM+ REGDB Writer VSS Volume Shadow Copy
DFS Replication service writer DFSR DFS Replication
DHCP Jet Writer DHCPServer DHCP Server
FRS Writer NtFrs File Replication
FSRM writer srmsvc File Server Resource Manager
IIS Config Writer AppHostSvc Application Host Helper Service
IIS Metabase Writer IISADMIN IIS Admin Service
Microsoft Exchange Writer MSExchangeIS Microsoft Exchange Information Store
Microsoft Hyper-V VSS Writer vmms Hyper-V Virtual Machine Management
NTDS NTDS Active Directory Domain Services
OSearch VSS Writer OSearch Office SharePoint Server Search
OSearch14 VSS Writer OSearch14 SharePoint Server Search 14
Registry Writer VSS Volume Shadow Copy
Shadow Copy Optimization Writer VSS Volume Shadow Copy
SPSearch VSS Writer SPSearch Windows SharePoint Services Search
SPSearch4 VSS Writer SPSearch4 SharePoint Foundation Search V4
SqlServerWriter SQLWriter SQL Server VSS Writer
System Writer CryptSvc Cryptographic Services
TermServLicensing TermServLicensing Remote Desktop Licensing
WINS Jet Writer WINS Windows Internet Name Service (WINS)
WMI Writer Winmgmt Windows Management Instrumentation
Swipe to show more of the table

More Information

Restarting services will affect production environments. Please plan accordingly. 

Basic VSS Writer Troubleshooting

Launch an administrative command prompt and run 'vssadmin list writers' to determine which, if any, writers are in a failed state. Locate the writer in the list above, and restart the correlating service. Then rerun 'vssadmin list writers' to check if the writer is stable.

Restarting the services may not always resolve failed writers, and a reboot may be required.

If the writers continue to enter a failed state after stabilizing, further investigation will be required. Please include the System and Application event logs from the machine having issues when creating a case.

 

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