Just found an undocumented problem with PST Migration. If you try to run a PST Migration on a PST that has the attribute of Read Only, it will fail with the following 2 errors. Just an FYI
Event ID = 6609
PST file access error occurred
PST file: \\xxx\x$\Users\NYC\xxxxxx\xxxxxx\archive2.pst
Account:
Reference: SUP/OMS
Event ID = 6596
Unexpected MAPI error encountered
Error: The file \\xxx\xx\xx\NYC\xxxxx\xxxx\archive2.pst is not compatible with this version of the Personal Folders information service. Contact your administrator.
Component: Personal Folders
Reference: CPSTHelper::ConfigurePST/CMS1
