Cannot access the calendar in Outlook Web App in an Exchange Server environment

Applies to: Exchange Server 2010 EnterpriseExchange Server 2013 EnterpriseExchange Server 2013 Standard Edition

Symptoms


When users try to access the calendar in Microsoft Outlook Web App in a Microsoft Exchange Server 2010, Microsoft Exchange Server 2013, or Microsoft Exchange Server 2016 environment, the users receive the following error message:
The item you tried to access no longer exists.

The item wasn't found. You or a delegate might have moved or deleted it using another computer or a mobile phone.
Note This issue affects all users in the environment.

Cause


This issue occurs because the default calendar sharing policy is missing.

Resolution


To resolve this issue, follow these steps:
  • Run the following command to create a new calendar sharing policy:
    New-SharingPolicy "Default Sharing Policy" -Enabled $true -Domains *:CalendarSharingFreeBusySimple –Default $true
  • Open Internet Information Services (IIS) Manager, and then recycle the MSExchangeOWAAppPool and MSExchangeOWACalendarAppPool application pools.