Hi, 

Is this core environment? Can we get more information?

Hi Daniel,

Can you share more information about the error? Is it something like below?

Database error occurred. Contact administrator.

Url: https://cmbgse1916.corpnet.ifsworld.com:48080/main/ifsapplications/projection/v1/TeamCalendarHandling.svc/GenerateFirstLoadData

If so, you may raise a case with GSO Support to get Patch ID 159078, which address exact issue.

Hope this would be helpful.

Best Regards

Sugandi

Hi @dannyh,

Could you check if your user has the below permission sets enabled?
 

If not, could you enable it, refresh cache and then try again?

Best Regards,
Thanushi 

Hi Dannyh

Could You please check setting up Team Calendar as Default at Team Calendar setup will remove the error?