How to Remove Former Employees' Shared Calendars in Outlook
Question details
The user needs a method to permanently remove shared calendars belonging to former employees that persistently reappear in the Outlook application.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Attempting to clean up the Outlook calendar view by removing the shared calendars of users who have left the company.
- Observed behavior
- The deleted shared calendars reappear automatically after the Outlook client synchronizes, despite not being visible in Outlook on the web.
Verify that you have your current email account credentials available, as you will need them to configure a new Outlook profile. It is also recommended to check Outlook on the web first to confirm the shared calendars are truly absent from the server.
Create a New Outlook Profile to Clear Synchronization Data
Creating a fresh Outlook profile forces the application to build a new synchronization file, effectively discarding the corrupted cache that causes old calendars to reappear.
When an Outlook local data file (.ost) becomes corrupted, it may hold onto stale calendar permissions and continually redownload deleted shared calendars. Rebuilding the synchronization connection through a new profile is the most reliable way to clear this cache without deleting any server-side data.
Ensure that the Microsoft Outlook desktop application is completely closed before proceeding to your system settings.
Open the Windows Control Panel, change the view to 'Large icons' or 'Small icons', and click on 'Mail (Microsoft Outlook)'.
In the Mail Setup window, click the 'Show Profiles' button. Click 'Add', enter a recognizable name for your new profile, and click 'OK'.
Follow the on-screen prompts in the Add Account wizard to enter your email address and credentials, letting Outlook establish a fresh connection to the server.
Return to the Mail window, select the 'Always use this profile' option, choose your newly created profile from the dropdown menu, and click 'Apply' then 'OK'.
Open Outlook. The application will take a moment to synchronize your mail and calendar data fresh from the server, omitting the stale shared calendars.
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Frequently Asked Questions
Why do deleted shared calendars keep coming back in Outlook?
This generally happens because your local Outlook data file (.ost) retains outdated cache or corrupted synchronization permissions, prompting the client to continuously fetch stale data from the server even after you remove the calendar from your view.
Do I need to contact my IT administrator to remove these calendars?
If creating a new Outlook profile does not resolve the synchronization issue, you may need to ask your IT administrator to check Exchange server permissions. They might need to remove hidden legacy sharing delegations for the former employees using PowerShell.
Will creating a new Outlook profile delete my existing emails or contacts?
No. Your emails, contacts, and calendar events are safely stored on your email server (Exchange, Office 365, or IMAP). Creating a new profile simply forces Outlook to download a fresh, clean copy of your data to your local computer.
