Outlook requires a data file be scanned when it has detected corruption. This can prevent users from accessing the program. To bypass this requirement the following registry key can be altered.
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST
- Clear LastCorruptStore
- Set PromptRepair to 0
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST] "LastCorruptStore"="C:\\Users\\%username%\\AppData\\Local\\Microsoft\\Outlook\\alias@domain.ost" "EnableMarch2018BestBodyFix"=dword:00000000 "PromptRepair"=dword:00000000