boost::filesystem::rename: The process cannot access the file because it is being used by another process

[jround]

Recently a couple of our backup jobs (which haven't been modified in a long time) have been warning in Veeam with the below :-

boost::filesystem::rename: The process cannot access the file because it is being used by another process: "E:\Backups\SERVERNAMEHERE.vm-32287_3C8CD2020-01-26T191525.vbk", "E:\Backups\SERVERNAMEHERE_-_Daily_f_fwd_inc\SERVERNAMEHERE.vm-32287_3C8CD2020-01-27T191521.vbk" Failed to rename file [ExtentExFS[d2ae1f65-e771-4b9a-85f0-0b947b8cc43a]E:\SERVERNAMEHERE.vm-32287_3C8CD2020-01-26T191525.vbk]. Failed to process [renameFileWithRollback].

Afterwards the job automatically trys again then generates another warning

Nothing to process. All machines were excluded from task list.

As far as I can tell the backup is OK after that but I am trying to understand what this error means and why it is suddenly happening intermittently?

[oleg.feoktistov]

Hi,

Please contact our support for logs investigation.
Don't forget to share case ID here, as requested when you click New Topic.
You might also need to check this KB.

Thanks!