CAL items are restored automatically

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:

    Set-ExecutionPolicy RemoteSigned

    $LiveCred = Get-Credential

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri -Credential

$LiveCred -Authentication Basic –AllowRedirection

Note: When the credential window pops up, please type in your Office 365 admin account and password.

    Import-PSSession $Session

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 -CalendarRepairDisabled $true



About Robiul

Robiul has 15 years of continuous successful career experience in ICT with extensive background in System Engineering, IT infrastructure design, operations and service delivery, managing IT projects / MIS functions for local and multi-national companies with in-depth knowledge of multiple operating systems as well as construct / manage small to medium size Data Center. Proven ability to design and implement medium to semi-large scale LAN/WAN/WLAN and system infrastructures. Academic qualification: Master of Science in Information Systems. Professional certifications are: MCSE, CCNA, ITIL and FoundStone Security Professional, VCP, NetAPP, CISSP etc.
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