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- Windows VSS Writers and Corresponding Service Names
Windows VSS Writers and Corresponding Service Names
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 |
More Information
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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