This post features solutions to fix this data file is associated with a mail account OST file error on Outlook. This error can occur when a user fails to delete an ...

I installed Outlook 2010 for my MIL and didn't have her email account info when I did. Because Outlook forces the account wizard I ended up installing w/ out an email account at first. Once I had the ...

Some users have reported that when they open MS Outlook, they receive an error message that Outlook is using an old copy of your Outlook data file (.ost). For some ...