safari cannot open microsoft teams

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Safari browser support in Microsoft Teams

Teams preview won't open in safari.

Safari 11.0 uses Intelligent Tracking Prevention to block third-party tracking cookies. Because of the way Intelligent Tracking Prevention categorizes cookies, login.microsoftonline.com gets lumped into this category (even though login.microsoftonline.com is not a tracking domain), and Microsoft Teams is prevented from opening.

If you want to use Teams in Safari while Safari browser support is in preview , go to Preferences > Privacy   and uncheck the  Prevent cross-site tracking   setting. Then, close your browser and navigate back to teams.microsoft.com in Safari. 

Changing this setting may impact your experience on other websites.

Once Safari is fully supported for Teams, you will no longer need this workaround.

When you're done using Teams in Safari, go to Preferences > Privacy   and check the  Prevent cross-site tracking   setting again.

Read more about Intelligent Tracking Prevention here .

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Teams in Safari not opening

Split from this thread .

Since the last update of Safari on my Mac (version 12.3.1, Safari 15.4) Safari doesn't open Teams when I want to participate a meeting.

When a meeting is scheduled via teams.live.com it works fine. I get a pop-up to open the teams-app. But with teams.microsoft.com I don't get the pop-up to open teams, nor does the link in the window work. And I allowed for pop-ups in my privacy settings.

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Replies (7) .

• Microsoft Agent |

Hi Nico_66,

Thank you for posting into the forum community. We will highly appreciated your kind cooperation and patience in our forum community.

Based on your mentioned description, at once please kindly try to open team meeting ULR link in different web browsers (i.e. Edge Chromium or Chrome) and check if you can join team meeting or not. Here is the information article: Join a Teams meeting on an unsupported browser

Stay safe and healthy.

Regards, Darpan

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I am having the same issue. There seems to be some sort of security issue. Console log says the following:

Ignoring request to load this main resource because it has a custom protocol and comes from a sandboxed iframe

While I can manually use Chrome, it is a pain since the calendar invite link automatically opens up in Safari, which I used for all my other work. Also, it may only be a matter of time before a Chrome update has this same security issue.

So any specific solution here about how to re-enable the ability of Safari to open teams is really the information needed, instead of a work around of just using another browser. Hoping someone has an answer to this issue. If not, it seems Microsoft needs to change its set up not to use a sandboxed iFrame.

8 people found this reply helpful

I'm having the same problem as well and I agree it must be some kind of security issue in recent versions of Safari (versions older than a month or so ago worked fine).

I tried opening the URL in Firefox and Firefox put up a dialog allowing use of the "msteam" protocol and then assigning an app to use that protocol (MS Teams was automatically selected). If we could get Safari to allow a similar assignment, we would be OK. I don't see anything in the Safari Develop menu that would help here, though.

I have not encountered the same problem again. So probably something has changed.

The work around solution with Chrome did work as well, but is no longer needed and I find that a poor solution, to be honest.

1 person found this reply helpful

I had the same issue which caused me to miss out on a meeting. Just to share...

I was on Catalina. I applied the Safari 15.4 update and this broke Microsoft Teams. Clicking on a meeting URL in Mail opened the page in Safari, but clicking the option on the webpage to open in the Teams app did nothing.

I upgraded to Big Sur. The installer was a few weeks old and so did not include the latest Safari update. Trying a meeting URL started working again.

The Safari 15.4 update is showing as available in Big Sur, but suffice to say I won't be applying the update any time soon.

Edit: Just to add. It appears the Safari update is only for Catalina and Big Sur. So I assume this isn't an issue with Monterey.

https://support.apple.com/en-gb/HT213187

I have the same issue.

However, whenever I receive a link from live.microsft.com for a conference, it works fine-- it creates the proper handling to open up the team viewer.

However, when the link originates in the url from teams.microsoft.com, there is an issue opening the request to team viewer.

Any help on this will be appreciated. I have turned on cross traffic cookies....

2 people found this reply helpful

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MS Teams Meetings App No Longer Launching on Safari

Over the past week or so I have had issues with the MS Teams app for Mac not launching on Safari. Clicking the link opens Safari to the usual MS page which gives three options (1. download the desktop app 2. use browser or 3. launch app if you already have it), and my installed app used to open automatically from there. Now it doesn't, and clicking on the button for option 3 does nothing, whether I already have the app open or not. Given that it was working perfectly before, I guess it must be related to a glitch between MS and Safari in a recent Update?

In case it is helpful, a tech-savvy person posted on a thread on this topic in the MS Community thread, and shared that the relevant error message (viewable in Developer JS menu) is as follows: "Ignoring request to load this main resource because it has a custom protocol and comes from a sandboxed iframe"

Is anyone else having this issue? And, if so, have you found a fix?

I have already tried the following, based on suggestions found in the MS community forum...

• Delete MS Teams Identity Cache
• Uninstall and reinstall the Teams app

... but neither has resolved the issue.

I have found a temporary work-around because if I copy the invitation link into Chrome instead, it works fine. But Safari is set as my default browser, and I'd prefer to keep it that way if possible.

All suggestions sincerely appreciated. As a not-at-all-tech-savvy person, please explain any recommendations, ideally in words of one syllable!!

Thanks in advance :-)

MacBook Pro 15″, macOS 11.6

Posted on Apr 22, 2022 3:28 AM

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Apr 25, 2022 11:28 AM in response to CruisinKate

I am having the exact same issue. I have browsed around and have not been able to find an answer. I also use the Chrome workaround, but would like to continue to use Safari as my default browser.

Any help is much appreciated.

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Apr 23, 2022 8:14 AM in response to CruisinKate

Hello CruisinKate,

Just to confirm, does this only happen when trying to access Microsoft Teams from Safari, or do you experience issues accessing other content or webpages in Safari?

If Safari isn't opening a webpage as expected, please check out the information here: If Safari on Mac doesn't open a webpage or isn’t working as expected

If you're unable to open that app on your Mac, please check out the following page for some steps that may help: If you can’t open an app on Mac

• If you aren’t an  administrator  of your Mac, the administrator may be preventing you from using the app. Contact the administrator of your Mac.

•You may be trying to open an app that is not registered with Apple by an identified developer. If you want, you can  open an app from an unidentified developer . 

• If you recently installed a new version of macOS, some apps may need to be updated or reinstalled. See  Install and uninstall apps from the internet or disc .

If you continue to experience an issue, and it only happens with Microsoft Teams, we'd suggest reaching out to the developer. This link explains how to contact a developer: How to contact an app developer

Apr 24, 2022 4:19 AM in response to Brittany1416

Hi Brittany,

Thanks for taking the time to respond.

I am not experiencing any other issues, either with Safari opening web pages or with other apps not opening properly on my Mac.

As mentioned above, uninstalling and reinstalling the Teams app has not resolved the issue. And the fact that I can open fine using Chrome as the browser but not with Safari suggests the problem is at the Apple end of the equation not Microsoft (though I have posted in their Help Forum too, to cover both bases).

If you have any other thoughts about how to get Apple to look into this, using the error message info provided above, that'd be great. Otherwise, thanks again for trying to help.

Apr 26, 2022 8:55 AM in response to danGavilan

Thanks for also commenting, danGavilan . Hopefully someone will come back to us soon. It's not like this is an obscure app, so hopefully this will be taken care of soon and someone will come back to us..!

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How To Make Microsoft Teams Work In Safari

October 2023 Update: A new version of Teams for Mac has now been released.

If you’re having trouble using Microsoft Teams in Safari then here we show you how to make Teams work in the Safari browser on a Mac.

Limited Offer: You can currently get 86% off a Microsoft Office For Mac Home & Business Lifetime License for $29.97 (normally $219.99) for a limited period.

Safari uses something called Intelligent Tracking Prevention which blocks third-party tracking cookies. In order for Microsoft Teams to work in Safari however, Teams needs to use cookies.

Intelligent Tracking Prevention blocks the login.microsoftonline.com cookie which prevents Microsoft Teams from opening.

Although this isn’t a tracking cookie, Microsoft Teams requires a login cookie to secure your login into Teams.

You May Also Like:

• How To Use Microsoft Teams on M1 Macs

Follow these instructions to use Microsoft Teams in Safari:

• Go to Preferences > Privacy   and uncheck the Prevent cross-site tracking  setting.
• Close your browser and then go to Microsoft Teams in Safari.

You can then use Microsoft Teams in the Safari browser on a Mac.

When you’ve finished using Teams, it’s a good idea to go back to the Privacy settings and re-check the cross-site tracking setting to protect your privacy when using other sites.

If you still can’t get Teams to work in Safari, then your only other option is to use another browser such as Chrome or Firefox.

Alternatively, you can download and install the Microsoft Teams For Mac desktop app which is probably a good idea anyway if you use Microsoft Teams regularly.

Teams Not Working After Updating To Ventura

If you’ve recently updated to macOS Ventura and are finding that Microsoft Teams won’t work, then the above fix may not work.

In this case, the best option is to try using a free tool called Office Reset which will reset Microsoft Office applications including Microsoft Teams.

Once you’ve used Office Reset in Ventura, you should find that MS Teams works again in macOS Ventura.

2 Responses

Did NOT work on my Mac Pro, running Ventura 13.1 and Safari 16.2

This seems to be an issue with macOS Ventura. You can try using Office Reset to fix it.

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Teams on Mac: Use App or Chrome instead of Safari

This article applies to: Microsoft Teams

Microsoft Teams for Safari is still in preview, and some features, such as joining meetings or using the camera, sometimes don't work unless settings are adjusted. Using the  Teams for Mac app  is recommended. If you need to use a browser, try Chrome, which doesn't encounter the same issues that occur when trying to use Teams in Safari. 

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