I work for a big agency and some of us have ArcMap 10.8 and others still have 10.7. It is not an easy and quick process to upgrade those of us on the lower version so we have to save a copy as a lower version in order for those on 10.7 to be able to open the mxd's. Today we tried to do this and when any of us try to open the 10.7 version we get the following error pop up box (I cannot save a screen shot and upload it here bc my Arc is on a separate network with no internet access):
"Opening the selected ArcMap document failed.
The page layout of the map document could not be read.
The data frames of the map document could not be read due to the following error: 0x80040111 (ClassFactory cannot supply requested class)
The last successfully loaded component was: Unknown ProgID{[010F000-B6F8...]} (not sure if this is needed in it's entirety so not including all of it. Please let me know if it's needed to troubleshoot)
The specified file does not contain a valid ArcMap document or was saved using a newer version of ArcGIS."
This is the 10.7 mxd that we saved using "save a copy" and selected the "save as type" to be "ArcMap 10.7 Document".
Does anyone have any idea why this could be happening?