Adeptly Fix “.ost is not an Outlook Data File” of Outlook 2016

Adeptly Fix “.ost is not an Outlook Data File” of Outlook 2016: If you are also getting an error “OST is not an Outlook data file” of Microsoft Outlook 2016/2013/2010. Then, here is the most prominent solution for users to fix OST errors and open offline folder file in Outlook. Here, in this section you will get the most reliable solution to resolve OST file error and …