Microsoft Outlook uses two file types for holding message, calendar, task and notes data: PST and OST files. PST files are created in the user's computer for non-Microsoft Exchange accounts ...
These are a few ways you can be aware of isolating the problem. Open Microsoft Outlook and click on the File tab. Under Info, click on Account Settings, and then click on Account Settings from the ...
We suggest the following fixes if you get This is not a valid file name error in Outlook when sending email: Remove invalid special characters from the file name ...