Destination error: Failed to upload because it is being used by another process


I am receiving a transient error that is only affecting one of the multiple database backups on a particular job.

I backup the DB compress it with 7zip and send it to a local network share and also to Amazon S3. The failure happens on the local destination but uploads to S3 fine. Below is the error I receive. Has happened on diff’s and full’s but only on that particular database and only happens out of maybe 1 out of 5 backups.

10/14/2020 1:22:21 PM [Error] Destination error: Failed to upload “\iwthost-vm-file\SQLBACKUPSTEMP\Pranas.NET\SQLBackupAndFTP\backup\PROD202010141310diff.7z” file to “PROD” folder. > The process cannot access the file ‘\iwthost-vm-file\SQLBACKUPSTEMP\Pranas.NET\SQLBackupAndFTP\backup\PROD202010141310diff.7z’ because it is being used by another process.

My assumption is 7zip or something else is still holding on to the file but I can’t reconcile while after it fails on the local destination it uploads to S3 fine. Any pointers in the right direction on how to troubleshoot would be super helpful.


Hi Chris_Hunter,

Could you please disable the compression for the test, to check if it resolves the issue?

Sorry for the inconvenience.