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Firefox now blocks MS Teams, how can I stop this?

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Suddenly Firefox is now blocking MS Teams, all the other Office365 apps are OK including SharePoint, OneNote and OneDrive but Teams is blocked - why and can I fix it?

Suddenly Firefox is now blocking MS Teams, all the other Office365 apps are OK including SharePoint, OneNote and OneDrive but Teams is blocked - why and can I fix it?

Chosen solution

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


One issue that seems more common lately is Firefox's Content blocking feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Content blocking {web link}

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

More Information

FredMcD
  • Top 10 Contributor
4269 solutions 59846 answers

Chosen Solution

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


One issue that seems more common lately is Firefox's Content blocking feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Content blocking {web link}

Make sure you are not blocking content. [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there? --------------- One issue that seems more common lately is Firefox's Content blocking feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: [https://support.mozilla.org/en-US/kb/content-blocking Content blocking] {web link}

Question owner

Many thanks, we appear to be connected again!

Many thanks, we appear to be connected again!
FredMcD
  • Top 10 Contributor
4269 solutions 59846 answers

Did you find the cause of the issue?

Did you find the cause of the issue?

Question owner

I'm not sure I found the cause but in the process of checking around, I noticed my browser had not updated to v67.0 so I ran the update and then looked at content blocking, which held no surprises, I restarted the browser and Teams did then load.

I suspect it was due to the browser not auto-updating to v67.0

Many thanks,

I'm not sure I found the cause but in the process of checking around, I noticed my browser had not updated to v67.0 so I ran the update and then looked at content blocking, which held no surprises, I restarted the browser and Teams did then load. I suspect it was due to the browser not auto-updating to v67.0 Many thanks,
James
  • Top 25 Contributor
  • Moderator
1602 solutions 11326 answers

Firefox 67.0 was only just released on May 21

https://www.mozilla.org/firefox/67.0/releasenotes/

Firefox 67.0 was only just released on May 21 https://www.mozilla.org/firefox/67.0/releasenotes/

Question owner

Crikey! Don't tell me that, I will get a nose bleed being so close to the front end of development!

The secret of good comedy is timing, perhaps a happy coincidence, thanks James.

Crikey! Don't tell me that, I will get a nose bleed being so close to the front end of development! The secret of good comedy is timing, perhaps a happy coincidence, thanks James.

Modified by Duncan_F