PST Capture Tool - Import Error

[Zoom7000]

So, I've exported all my PSTs to a folder (E:\PSTs) and I've installed the PST Capture Tool. I've successfully transfered a whole load of PSTs to Exchange Online, however, I'm getting the following error on a lot of the mailboxes:

 

Import error: The specified object was not found in the store.

 

Now, what is unusual, is that on some of the mailboxes, if I try it and let it fail and then retry the import a day or so later, it goes through without any failure. However, I still have a lot of mailboxes where it won't import at all. Any ideas how I can get resolve the error?

[FN-GM]

Did you manage to find the cause of this please?

[Zoom7000]

No, unfortunately not. I was lucky to only have 30 mailboxes, so I kept retrying and eventually they all just went through.

[FN-GM]

This tool needs working on. Its so unreliable!

[FN-GM]

Deleting the mail profile and creating it again helped.