In Microsoft Outlook 2013, 2016, users generally face the following error message:

“Errors have been detected in the file C:\Users\\AppData\Local\Microsoft\Outlook\.ost”

The reason behind this error in MS Outlook is corruption is detected in your offline Outlook Data File (.ost) and there are many reasons for corruption in OST file:

· Oversized OST file.

· Virus or Malware infection in OST file.

· Improper shutdown of Outlook during OST and Exchange Server…