Applies to: Online and Onprem

Symptom1:

When we try opening the calendar control of  "Date and Time" type column, it shows "The Web Page cannot be displayed" error instead of calendar control (Screenshot below).

Cause:

– Root site collection does not exist in the web application

Resolution:

Create root site collection for the web application if Cause 1 is the case.

Symptom2:

When we try opening the calendar control of  "Date and Time" type column, it shows access denied/permissions related error instead of calendar control (Screenshot below).

Cause:

User does not have enough permissions on the root site (User need to have at least read permissions on the root site in the current site collection)

Resolution:

Grant "Read" Permission to users on the root site of the current site collection if Cause 2 is the case.