Failed to remove guest VSS snapshot

[adcliff]

Receiving the following warning every couple of days whilst backing up a couple of servers:
Failed to remove guest VSS snapshot Details: RPC function call failed. Function name: [BlobCall].

The backups are successful and that is the only warning. Both backups are fine for a couple of nights then both have the same warning on the same night.
I've seen a couple of suggestions regarding possible firewall problems, but I think that would cause a problem every night.

[Shestakov]

Andrew,
Please provide the support case number as required by the forum`s rules when posting a question about technical error.
The issue is generic, so please contact Veeam support to investigate it if haven`t done it yet.
Thanks

[adcliff]

Case support # is 01799833.