
For starters, I must say that this error message is cryptic and confusing to the end user, giving no real idea to the user what might be the cause.
In my case, this error cropped up in an Office 2016 setup. Specifically, the user’s computer had Office 2016 and was connecting to a SharePoint 2016 document library. The error would then show when the user attempted to check in an edited PowerPoint document.
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