PowerShell provides the functionality to access event and meeting entries in the calendars of Exchange users. Here, we will discuss the methods of obtaining a calendar events list or deleting a particular event\/appointment from everyone’s calendars in an Exchange Server or Microsoft 365 organization.<\/p>\n<\/p>\n
In the beginning, we will understand the process to view the list of calendar events in a user’s mailbox of Exchange Online (Microsoft 365). For obtaining details about the items in the user’s calendar, we utilize the Microsoft Graph API. Commence by creating a new application in Azure (Microsoft Entra ID <\/strong>> App registration> New registration<\/strong>) and providing it the Microsoft Graph permissions: Now you can use the Microsoft.Graph module to connect to the Microsoft 365 tenant. In this example, we will use certificate-based Azure authentication in PowerShell<\/a>.<\/p>\n To view events in a particular user\u2019s calendar for the current month:<\/p>\n<\/p>\n <\/p>\n $EndDate = (Get-Date -Day 1).Addmonths(1)<\/p>\n <\/p>\n Get-MgUserCalendarView -UserId [email protected] -CalendarId \"Calendar\" -StartDateTime $StartDate -EndDateTime $EndDate | Select-Object -Property @{Name='EventStart';Expression={ $_.Start.DateTime}},@{Name='EventEnd';Expression={ $_.End.DateTime}},Subject, BodyPreview<\/code><\/p>\n<\/p>\n The command returned the event subjects, their contents (body preview), and their start\/end times.<\/p>\n<\/p>\n Use the Remove-CalendarEvents<\/strong> cmdlet to cancel (delete) an event (appointment, meeting) in Exchange calendars. It works for both Exchange Online and Exchange Server 2019 organizations.<\/p>\n<\/p>\n Open the PowerShell console and connect to your Exchange Online tenant (using the Exchange Online PowerShell module<\/a>) or the Exchange Server host (remote connection to Exchange server without EMS installation<\/a>).<\/p>\n<\/p>\n Removal of all upcoming events (within the next 15 days) from a user\u2019s calendar for which they are the organizer:<\/p>\n<\/p>\n Alternatively, you can delete all events starting from a specific date:<\/p>\n<\/p>\n You can use the The main disadvantage of the Remove-CalendarEvents<\/em> cmdlet is that it can only remove upcoming calendar events and does not allow you to select events by subject, organizer, content, or any other property. The most common use of Remove-CalendarEvents is to quickly clear a user\u2019s calendar of events that were created by an employee who has been fired, is off sick, or has gone on holiday.<\/p>\n<\/p>\n If you need to delete past events, or if you are using on-premises Exchange Server 2016\/2013\/2010, you can use the Search-Mailbox<\/strong> or New-ComplianceSearch<\/strong> cmdlets to search and delete items in Exchange mailboxes<\/a>.<\/p>\n<\/p>\n On Exchange Server, for example, you are able to locate calendar events that have a specific subject line as follows:<\/p>\n<\/p>\nCalendars.Read<\/code> and Calendars.ReadBasic.All<\/code> respectively.<\/p>\n<\/p>\n$certThumbprint = \"9CF05589A4B29BECEE6456F08A76EBC3DC2BC581\"
$AzureAppID = \"111111-2222-3333-4444-12345678\"
$tenant=\"woshub.onmicrosoft.com\"
Connect-MgGraph -AppId $AzureAppID -CertificateThumbprint $certThumbprint -TenantId $tenant<\/code><\/p>\nInstall-Module Microsoft.Graph -Scope AllUsers<\/code><\/p>\n<\/p>\n<\/div>\n$StartDate = (Get-Date -Day 1)<\/p>\nRemoving Event from Exchange Calendar Using PowerShell<\/h2>\n<\/p>\n
Remove-CalendarEvents -Identity [email protected]<\/a> -CancelOrganizedMeetings -QueryWindowInDays 15<\/code><\/p>\n<\/p>\nRemove-CalendarEvents -Identity [email protected]<\/a> -CancelOrganizedMeetings -QueryStartDate 04-10-2023 -QueryWindowInDays 60<\/code><\/p>\n<\/p>\n-PreviewOnly -Verbose<\/code> options to view a list of such events without deleting them.<\/p>\n<\/p>\n