Symptoms:
1. Quiescing fails when enabling tools debugging within the OS.
2. This happens with both manual quiescing from the vSphere Client and quiescing triggered by the backup solution as a part of the backup activity.
3. Inside the VSS logs, you see that the VSS is unable to identify the recovery volume that is included in the VSS SnapshotSet during the VSS process and as a result the VSS errors out with the IDispatch error #8468.
Unexpected result from QueryStatus(): 0x80042314
[YYYY-MM-DDTHH:MM:SS] [ warning] [vmvss] [30308] CVmSnapshotRequestor::WaitForOperation():3677: Async operation result: IDispatch error #8468
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] CVmSnapshotRequestor::DoSnapshotSet():2138: failed call: ret = WaitForOperation(async), result = 0x80042314
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] CVmSnapshotRequestor::Finalize():2920: enter
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] CVmSnapshotRequestor::UnmountSnapshotVolumes():2742: enter
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] VDSHelper::ForEachVolume():332: enter
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] VDSHelper::ForEachVDSPack():250: enter
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] VssProvider_IsDiskSupported():81: Mismatched vendor id: NECVMWar
[YYYY-MM-DDTHH:MM:SS] [ debug] [vmvss] [30308] VssProvider_IsDiskSupported():108: VMware disk uuid not found: 6000c213-52cc-732c-9bdd-cd2be5e64c88
4. The application log of the OS at the time of the issue shows VSS erroring out.