If you open MS Outlook and see an error message, Outlook is using an old copy of your Outlook data file (.ost), then use ...

Microsoft Office Outlook maintains everything in a data file, also called PST or OST file. It is an offline copy of mailbox data stored on a local PC. In case of issues, you must delete the data file ...

Have you ever encountered a strange file with an NTUSER.DAT name on your Windows PC? Don't worry, it's not a virus, but quite an important file. In this article, we'll explain what it is and why you ...