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
When a task in current project A has External link to a project B, which some how does not exist in the same location or file name changed, your project will show the error every time you open it.
3 ways to find and remove them as below.
Choose View > Gantt Chart.
If any filters are turned on, turn them off: On the View tab, in the Data group, select No Filter in the Filter list.
When AutoFilters are turned on, an arrow is displayed to the right of each field heading. Turning off AutoFilters displays all tasks.
Choose Project > Links Between Projects.
OR easy way to find insert a column, External task and look for YES in it and then break the dependencies.
- Also you can find external tasks by finding C:\Users ..... in Predecessor or Successors column then delete it