Skip to content

Latest commit

 

History

History
65 lines (52 loc) · 2.39 KB

mtr-device-cannot-fetch-calendar.md

File metadata and controls

65 lines (52 loc) · 2.39 KB
Raw
title description ms.date author ms.author manager audience ms.topic localization_priority search.appverid appliesto ms.custom ms.reviewer
Teams Rooms devices can't fetch calendar from Exchange Online
Resolves an issue that a Microsoft Teams Rooms (MTR) device can't fetch calendar from Exchange Online.
10/30/2023
helenclu
luche
dcscontentpm
Admin
troubleshooting
Normal
SPO160
MET150
Microsoft Teams
sap:Msft Teams Rooms Windows (MTRW)\
CI163362
subansal, meerak, scapero

Teams Rooms devices can't fetch calendar from Exchange Online

Symptoms

After you sign in to a Microsoft Teams Rooms device, the following error message is displayed:

Cannot fetch calendar

:::image type="content" source="media/mtr-device-cannot-fetch-calendar/error.png" alt-text="Screenshot of the Cannot fetch calendar error.":::

And the following error is logged in the sign-in logs in Microsoft Entra ID:

“requestId": "<request ID>",
"userDisplayName": "Teamsroom@contoso.com
"userPrincipalName": " Teamsroom@contoso.com ",
"userId": "<user ID>",
"appId": "<app ID>",
"appDisplayName": "Office 365 Exchange Online",
"ipAddress": "<IP address>",
"clientAppUsed": "AutoDiscover",
"userAgent": "MicrosoftTeamsRoom/<version>",
"correlationId": <correlation ID>",
"conditionalAccessStatus": "failure",
status": {
    "errorCode": 53003,
    "failureReason": "Access has been blocked by Conditional Access policies. The access policy does not allow token issuance.",
    "additionalDetails": "If this is unexpected, see the conditional access policy that applied to this request in the Azure Portal."
}

Cause

This issue occurs if modern authentication isn't enabled for Teams Rooms, and your organization uses a Conditional Access policy to block basic authentication.

To find out which Conditional Access policy is applied, review the Microsoft Entra sign-in events.

Resolution

To fix the issue, enable the client-side setting for modern authentication on Teams Rooms:

  1. In Teams Rooms, select the More (...) button.
  2. Select Settings, and then enter the username and password for the device administrator.
  3. On the Account tab, turn on the Modern Authentication switch, and then select Save and exit.