Issue Definition: Office 365 Deleted calendar events keep coming back.
This action will need the global administrator permission for the Office 365 account.
1. Please start the Windows PowerShell in the PC and run it as administrator.
2. Then run the command below to connect to the exchange online PowerShell:
$LiveCred = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential
$LiveCred -Authentication Basic –AllowRedirection
Note: When the credential window pops up, please type in your Office 365 admin account and password.
3. Run the command below, replace the username with the bosses’ email address in the command:
Set-Mailbox -Identity username -CalendarRepairDisabled $true
Set-Mailbox -Identity firstname.lastname@example.org -CalendarRepairDisabled $true