Forum Discussion
This project contains links to one or more data sources
Apparently at some point you or someone else created imbedded links to the Project file. It could have been a hyperlink, the file was part of a master/subproject structure, a resource pool/sharer structure, or had cross-project links to another file, or perhaps had an imbedded image. Lots of possibilities.
Also, the fact that your file is also much larger than your other similar files indicates there may be corruption. I suggest you try each of the methods in the following Wiki article.
John
I recently received a new computer, I am on Office (project) 365.
I started getting the pop up only when I got my new computer.
This problem occurs EVERY TIME I open ANY PROJECT file. My colleague opens the same files without the warning.... Hence, it should be PC / software setup not a problem with the project file.
This is an older post so it's not totally clear exactly what "this problem" is in your case. I suggest you re-post as a new question and fully explain the issue.
John