"Resolve" is disabled in this document for all comments. Even if I insert a new comment, I can't resolve it.
Change tracking is enabled, document protection disabled (as much as i can see)
21 Answer
Yes, thanks peterchen very much.
Please check if there is "Compatibility Mode" shown next the file's name at the top of the Word app.
If so, please backup the file fist, then upgrade the document to the newest file format via going to File > Info, use Convert function.
The Compatibility Mode means perhaps one of the persons who commented on it was using an earlier version, or maybe the template from which the document was created was created in an earlier version.
