Windows 10: Why have I lost all of my events in Windows 10 Calendar?

I have two laptops, same vendor, different models. Both run Windows 10 21H2. Both are updated through the Windows Update Patch Tuesday Dec patches. Both have the Windows Mail app and the Windows Calendar set up in the same way, namely an AT&T/Yahoo account a BellSouth account added 6 months ago by choosing Yahoo in the setup, signing into the same AT&T/Yahoo account, and receiving the confirmation that everything was setup. The Mail app and the Calendar app have been syncing just fine with AT&T/Yahoo calendar over these past 6 months -- no problems: a the Mail app on both l

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gmail calendar event is deleted by calendar app

Hi,

We appreciate your time and effort for getting back to us.

If your Google calendar can't be synced with the Windows Calendar app, then follow the below Microsoft article.

Windows help & learning

If the issue persists then, I suggest you to uninstall the apps which came inbuilt with Windows 10 using Windows PowerShell and reinstall using Windows Store. Follow the below steps.

• 
  Open the Start menu, type Windows PowerShell in
  the search bar.
  
• 
  Right click on the Windows PowerShell and select Run as administrator.
  
• 
  Enter the below command to reinstall the Mail and Calendar app.
  

get-appxpackage *microsoft.windowscommunicationsapps* | remove-appxpackage


After performing the above steps, install the Mail and Calendar app form the Windows Store.

If you need any further assistance let us know and we would be glad to assist you.

 

Calendar events missing in App

Hello,

One possible reason why you lost the events you set up 12 days in the past and 13 days in the future is due to some recent changes you made either with the account you signed in, or in the Calendar app settings. To help you restore the missing events in
your Calendar App, kindly supplement us with more information by answering these questions:

• Were there any changes made with the account you signed in, or in the Calendar app settings prior to the issue?
  
• When did you notice that there are missing events?
• Did this issue happen before?
• What are the steps that you have done in an attempt to resolve the issue?

We look forward to your prompt reply.

 

Windows 10 Mail & Calendar Event details

Hi Macote,

Thanks for posting your query on Microsoft Community.

To assist you better, I like to know; which all additional details you are referring to?

I like to inform you that; while adding an event in your calendar, you will have the following options/details to add.

• 
  Event name, location, and start and end times.
  
• 
  Reminder and free/busy status (how the time should appear on your calendar).
  
• 
  The Calendar where the event should appear (if you have more than one account).
  
• 
  The description or agenda for the event.
  
• 
  Choose Private if you don't want others to see event details.
  

If any of the above mentioned details are missing, then there might be an issue with the Calendar app. I suggest you to perform Windows app troubleshooter and check if it helps.

Follow the below steps:

• 
  Type troubleshooting in the
  Search area on the taskbar and hit Enter.
  
• 
  Click on View all on the left panel of the Troubleshooting Windows.
  
• 
  Select Windows store Apps.
  
• 
  Follow the on screen instruction.
  

For more information, refer to the below link:

Set up an event, a recurring event, or a meeting in Calendar for Windows 10 - Microsoft Support

Hope it helps, reply to us with the status of your issue. We will be happy to assist you.