What's the issue/error received?

I didn't know there was a problem, but none of our filenames have a '+' symbol in them. I rename them to packagename_version_datepackaged before uploading to the DP.

This is always a joy in the world of mixed platforms. I’ve learned that even if I’m an Apple nut that can get away with naming files almost anything I like, I have to subject myself to Microsoft’s file naming rules as most of my company’s backend infrastructure is on Microsoft including user file storage on OneDrive.

So no one knows if there’s a setting in IIS to workaround this issue?

@c.kay I did a google search, maybe this will help you.

Enable double escaping in IIS

Thanks that worked.