Your Microsoft 365 monitor's Service Health data collection may have stopped because of the recently updated Microsoft 365 Service Communications API policy.
Log in to the Microsoft Azure portal and navigate to the Azure Active Directory section.
Click on App Registrations > All Applications and select the application for which you have added Microsoft 365 monitor in your Site24x7 account.
Go to API Permissions under Manage and grant the following additional Application permissions to Microsoft Graph API:
Log in to your Site24x7 account.
Navigate to Server from the left navigation pane and select Microsoft 365 from the drop-down.
Choose a resource for which you have added Microsoft 365 monitor in your Site24x7 account.
Click the hamburger icon and then Edit, which will bring you to the Edit Microsoft 365 Monitor page.
Under the Authenticate with the Site24x7 App section, you will find Monitor Microsoft 365 Reports. Click the edit access icon near the Access Granted tab. This will open the Microsoft 365 Login Window.
Log in to your Microsoft account and then select Accept to grant access again for the new permission changes to reflect in the existing monitor.
Click Save to save your settings on the Edit Microsoft 365 Monitor page.
Now, you can view the Service Health data from the Summary tab and the Service Health tab of the Office 365 monitor.