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Asked: 2026-05-16T01:15:42+00:00

Developing a VSS writer app: see this error during backup, initiated by windows backup

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Developing a VSS writer app:
see this error during backup, initiated by windows backup tool,
is there defined error codes for 2155348129 from Microsoft?

The backup operation that started at ‘‎2010‎-‎07‎-‎20T02:54:19.354000000Z’ has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code ‘2155348129’

This does not happen when VSSwriter service (my application) is stopped.

Any help is appreciated. Nothing useful found on TechNet.

Hackish workaround:
Interestingly the back up works is when “windows partition is made active”. Of course this leaves the system non-boot-able upon restart

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  1. Editorial Team

    TechNet Blog

    Decimal 2155348129 is 0x807800A1 in hex.

    Quickly searching the Internet for this value takes me to this blog:

    It’s an HRESULT

    This error code is of a special type called an HRESULT.

    Namely it’s a VSS related HRESULT

    And TechNet has a table that lists our specific HRESULT value:

    Note: VSS is short for Volume Shadow Copy Service. SPP is short for Shared Protection Point. They log into the regular Windows application event log. And they use VSS and SPP as their event-Source-identifier.

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