EventID 34113: too busy to quiesce to take the snapshot

Hi,

We want to make VMDK backups of VMs hosted on a VMware ESXi 5.1 host but get the following error:

• unable to create a snapshot of the virtual machine. The virtual machine may be too busy to quiesce to take the snapshot

We use two backup servers in our environment which face this problem. One with Windows 2003 R2/BE2010 R3 and the other with Windows 2008 R2/BE2012. Both Windows and BE are fully patched.

The VMs don't have VMware tools or BE agent installed. With the VMware Vsphere Client it is possible to make a quiesce snapshots.

Any help will be appreciated.

JaapB