Possible Bug - Duplicati stops discovering files when a file is in use

Did the restore come out about right? If you REALLY want to see if it’s right, you can use something like WinMerge right after backup and a restore, to see if the restore picked up all the files that it should have. Default restore will optimize speed on obtaining the file data from local file blocks if it can, but I think that doesn’t matter here because you’re wondering if the file is backed up at all, without a worry on contents. For very best simulation of a disaster recovery, you can try a direct restore to a different Windows PC…

Duplicati skipping lots of files/folders reminded me of this one, but that’s on individual files gone missing.