ArcGIS adding drive letter

[DirkPeterson3]

Has anyone else had ArcGIS 10.4 add a drive letter when opening an mxd.  The correct path is something like \P\GIS_Data\ND.gdb, and it got changed to \P\j\GIS_Data\ND.gdb.  It doesn't happen often enough to really be a problem, but when it does happen its frustrating.

[DanPatterson_Retired]

This isn't a drive on a local machine by the looks of it.  What environment are you working in? It may be the source of the issue.

[AdrianWelsh]

Dirk,

Have you had this issue on other versions of ArcGIS (like 10.3.1, etc.)? Or is this 'new' to 10.4?

[RebeccaStrauch__GISP]

If "P" is a server/machine name,try seeing if it likes \\P\....

If it is a relative location from the current location, may  it would like   .\P\....  (notice dot slash at beginning)

Otherwise, a snapshot of the resources for the mxd woudl be helpful.  May in ArcCatalog (with he ,mxd closed) if you right-click on the mxd it has an option to "change datasources".  If you use that (can cancel without changing anything) you will see how the .mxd is referencing the data.  My give you some clues on the issue.