#shadowcopies #backup #vssadmin #vss #windows #regsvr32 #registry #snapshot BackupExec Error: VSS Writer failed Error Example Backup- D: Data V-79-57344-34110 - AOFO: Initialization failure on: "\\EXIBKHT01\Microsoft Information Store\First Storage Group". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS). Snapshot provider error (0xE000FED1): A failure occurred querying the Writer status. Check the Windows Event Viewer for details. Writer Name: Exchange Server, Writer ID: {76FE1AC4-15F7-4BCD-987E-8E1ACB462FB7}, Last error: The VSS Writer failed, but the operation can be retried (0x800423f3), State: Failed during prepare snapshot operation (8). Check if the data is written to tape Check if ``Volume Shadow copy for Exchange`` is functioning: ``Vssadmin list writers`` Writer name: 'Microsoft Exchange Writer' Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7} Writer Instance Id: {501b3dcf-344e-425f-ba28-94a36cabd797} State: [1] Stable Last error: No error Writer name: ‘Microsoft Exchange Writer’    Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}    Writer Instance Id: {30bcaa89-69fb-451e-a60d-bf095ca75839}    State: [8] Failed If something is wrong with #vss Then do: ``` cd /d %windir%\system32 net stop vss net stop swprv regsvr32 ole32.dll regsvr32 oleaut32.dll regsvr32 vss_ps.dll vssvc /register regsvr32 /i swprv.dll regsvr32 /i eventcls.dll regsvr32 es.dll regsvr32 stdprov.dll regsvr32 vssui.dll regsvr32 msxml.dll regsvr32 msxml3.dll regsvr32 msxml4.dll net start swprv net start vss ``` Or install this fix : http://support.microsoft.com/kb/940349  VSS Rollup fix And / Or: ``` HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem and create a new DWORD Name: Enable Remote Streaming Backup Type: DWORD Value: 1 (remote backup enabled) ``` Zie ook [[Backup, using TAR on Tape in AIX]] Zie ook [[Control Windows Services]]