Failed netbackup flashbackup

We have had a couple of redberries in netbackup for some time on one virtual converted server.

"Snapshot error encountered(156)"  is the only thing that netbackup are reporting.

So, I tried to take a manual flashbackup of the server to se what happened in vsphere tasks.

The job "Create virtual machine snapshot" ended with the error code
"Cannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine."

Tried to do a manual snapshot, and did not got any error, however, when checking "Quiesce guest file system(Needs VMWare Tools installed" it would create the same error.

It had to be something with vmware tools and vss so I simply tried to uninstall vmware tools, reboot, and install it again, however it did not work anyway.







Checked the event-viever on the server and noticed som error codes from vss in the application log:

"An internal inconsistency was detected in trying to contact shadow copy service writers." with event ID: 12302
















Googled around found a solution and ran the following commands to reregister vss:

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


It worked perfectly after that.

The cause of the problem is however still unknown, but I suspect that some techie in our department have run the Microsoft Security Wizard and made some registry changes from that.