How to Fix Microsoft Teams calls not ringing

If you notice that Microsoft Teams is not syncing, then it might be a cache problem behind it. You can choose to troubleshoot the issue from the Task Manager and in this guide, you'll learn how to do it.

2. How to Fix

1. Configure Calling Plans in Microsoft Teams

Calling Plans is that Office 365 feature powered by Skype for Business that lets you use Teams to make/receive calls to or from landlines and mobile phones via the public switched telephone network (PSTN).

Using a Teams client that supports 1:1 Teams calling and 1:1 calling enabled in Teams is mandatory for enabling the Calls tab in Teams. For more info on 1:1 calling in Teams, read Set-CsTeamsCallingPolicy.

Then, to control incoming calls in Teams or Skype for Business, administrators need to use TeamsUpgradePolicy, via the Microsoft Teams admin center.

Islands mode is the default configuration of TeamsUpgradePolicy. By default, VoIP, PSTN, and all federated calls to users are routed to Skype for Business. To change that, updating the policy to enable inbound calling to Teams is your next step.

Long story short, Islands mode guarantees that incoming VOIP calls from Skype for Business land in the recipient’s Skype for Business client, just as incoming VOIP calls that originated in Teams land in Teams too, if both sender and receiver are in the same tenant.

2. Check Microsoft Teams call settings

    Click your profile picture at the top of Teams.

3. Verify Quiet Hours settings

    Enter into your Teams client.

Coworkers often have their PC and mobile with the Teams app. This turns into a problem when both of them ring whenever a call comes.

When out of the office, you don’t want to be interrupted by a Teams call or see the call pop-up on your phone, so there is an option in the Team’s mobile client to set quiet hours for yourself, just to make sure it doesn’t ring your mobile phone.

This seems to interfere with Microsoft Teams calls on desktop, so you might want to review your decision.

4. Remove Microsoft Teams blocked numbers

  1. Click on your profile picture.

To view and manage the numbers you’ve blocked is possible if you follow the above steps. This will certainly make Microsoft Teams calls work again if the issue was isolated to blocked numbers only.

5. Check if Microsoft Teams is up-to-date

  1. Start by clicking your profile picture at the top of the app.

Linux users aren’t able to update manually within Teams for the moment.

Maintaining the health of the app is as simple as following the above steps whenever you remember the lack of any recent pop-up update notification or when calls stop ringing all of a sudden.

6. Ensure that you are connected to the Internet

  1. Click your profile picture at the top of Teams.
  2. Click Settings.
  3. Hit Update and Security.
  4. Select Troubleshoot from the left-side menu.
  5. Scroll down and click on the Internet Connections option.
  6. Click Run the troubleshooter.
  7. Up next, just follow the on-screen instructions to complete the steps.
  8. Restart Teams and check if the issue disappears.

When calls are failing to ring the desktop, make sure no network issue is interfering. Follow the above procedure instead of waiting for that annoying notification of another missed call.

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