Problem: Opening a MXD stored on a UNC-pathed network share generates errors in ArcMap
ArcMap may quit or crash with a "referenced memory" or "ArcMap.exe has generated errors" message when accessing a MXD file stored on a UNC-pathed network share.
This problem can occur when double-clicking on a MXD from a shared folder on a server that is accessed via UNC paths.
Solution or Workaround
Instead of accessing the network share by UNC paths, map a drive to the location.