About this error
This error can occur for a variety of reasons and is often accompanied by additional error information to help pinpoint the cause of the issue.
In this article we have attempted to describe various conditions which might be producing this error and have provided links to relevant solution articles.
We also provide a utility called VSSFix which can be used to fix VSS, by recreating the correct registry setting and re-registering all VSS components. Use this only if you are unable to find a more specific solution using the provided articles. You will be able to download VSSFix at the end of this article (Found here).
Problem cases & solutions
Disks with a non standard sector size
If you see the following in the extended VSS information:
You may have a disk with a non-standard sector size attached to your system, see here for a solution:
VSS fails due to disks with a non-standard sector size
- Other VSS applications have modified VSS
If you have used other backup (or any VSS aware) software in the past it may have altered VSS. To fix this issue see here:
VSS fails due to modification by 3rd party software
- VSS failing on Windows Server 2008 R2 also producing Windows Event ID 12293
This article describes a fix for a specific issue that can occur on Windows Server 2008 R2:
VSS errors occur and Windows Event 12293 is also present on Windows Server 2008 R2 without BitLocker
Identifying VSS error information
You have 3 pieces of information to help diagnose the issue:
- HRESULT - This is a windows function error code.
- Error text - This is descriptive error text provided by VSS.
- Result code - This is the VSS result code.
The extended VSS error information will be reported as below for version 5. Note the result code may be different.
To get the extended VSS information, you need to run the backup from a VBScript file.
Right-click on your XML definition and select Generate VBScript. Accept the defaults and run the VBScript source.
To run VBScript, click the VBScript tab, right click on the file and select Execute. Once run, a detailed log file will be created in the same directory as the VBScript source. The log file name will be log-<date>-<time>.txt.
Open the log file with notepad or similar and search for the following text:
ERROR: COM call "m_pVssObject->BackupComplete(&pAsync)" failed.
If you have not been able to fix your issue using one of the articles linked above please download one of the below programs to fix your problem:
VSSfix 32bit - download
VSSfix 64bit - download