According to Microsoft: You cannot set a password on an Offline Outlook Data File (.ost).
The Change Password button doesn’t appear if you are using an Offline Outlook Data File (.ost) file.
I have an .ost file (DetectFileFormat will also return OST) which will return True for:
How IsPasswordProtected can be True for .ost file?!
ost.png (21.5 KB)
- And do you have a code sample to merge pst and ost files using: