Invalid Connection handle when backing up VM in vmware

[Holloween]

Dear community,

When I attempt to backup my vm's in vmware I have this error:

V-79-57344-38277 - Unable to open a disk of the virtual machine.
VixDiskLib_Open() reported the error: Invalid connection handle

I am using Backup Exec 2012

Steps I have tried:

- Use NBD for transport mode only.

As attached is the job log.

What could be the cause?

[Orionex]

Hello,

I advise to take the debug logs 

Technote related to this error code : http://www.symantec.com/docs/TECH135343

Best Regards,

[pkh · Accepted solution]

What version of ESX are you using?  If it is ESX 5.1, then it is not currently supported.  See

https://www-secure.symantec.com/connect/forums/vsphere-51-support-update

Also, you would need a licenced copy of ESX.  BE uses the vStorage API which only comes with the paid version of ESX.

[Holloween]

Issue solved. Forgotten to update this thread.

Turns out my esxi host and vcenter becomes "unlicensed" for no reason. Re-activated it and backup resumes.

Thanks everybody! Happy new year!

Edit: pkh is right. Need ESXi host to be licensed.