I'm running Teams on Microsoft Windows Server 2016 (remote VM for working). Past month I have issue to open links in chats/team channels. When I click on hyperlink, nothing happens. I've checked default browser is set to Chrome. I've tried to: restart Teams sign out&in to our corporate account clear cache of browser and teams change default browser restart whole computer reinstall application I've tried to do the steps both separately and all of them at once with the computer restart at the end. Nothing helped. I'll be greatful for any help. Thanks

Got final response from Microsoft Support: this is well-known issue with Server 2016 for about a year now. As Server 2016 is out of maintenance support, there will be no fix. The issue is related to maximum character URL-limitation by OS. Two possible workarounds: update to Server 2019 disable SafeLinks Policy in Security AdminCenter (including exeption for BuiltIn-default-policy) and wait 24h The issue propagates through all tenants starting about a year ago... so some organisations are affected for quite some time and some only recently.

This issue happened in 1.6.00.26474 The Log shows "Opening external URL failed: Unknown error "

Link in Teams chats not opening Browser

Rajnoch Filip 41

I'm running Teams on Microsoft Windows Server 2016 (remote VM for working). Past month I have issue to open links in chats/team channels. When I click on hyperlink, nothing happens.

I've checked default browser is set to Chrome.

I've tried to:

restart Teams
sign out&in to our corporate account
clear cache of browser and teams
change default browser
restart whole computer
reinstall application

I've tried to do the steps both separately and all of them at once with the computer restart at the end. Nothing helped.

I'll be greatful for any help.

Thanks

SokiGuo-MSFT 24,206 Reputation points Microsoft Vendor

2023-02-27T08:01:11.6066667+00:00

Hi @Rajnoch Filip

It has been a while, how is everything going?

If you have any update about this issue, please feel free to post back.
Rajnoch Filip 41 Reputation points

2023-02-28T10:13:32.1066667+00:00

Not yet, I am waiting for our overhelmed IT security department to check the link security policy.

Unfortunatelly I found, that I cannot open links only on virtual remote desktops (explicitely Citrix VDI and remote desktop on virtual Windows server). On my physical laptop I can open the links correctly.
SokiGuo-MSFT 24,206 Reputation points Microsoft Vendor

2023-03-02T08:19:36.02+00:00

Hi @Rajnoch Filip

Based on your description, this doesn't seem to be an issue with the Teams client. To further troubleshoot if this is an issue with your security policy, check to see if this is the case for others in your organization.
SokiGuo-MSFT 24,206 Reputation points Microsoft Vendor

2023-03-06T06:12:41.1666667+00:00

Hi @Rajnoch Filip

Is there any update on this case?

Please feel free to drop us a note if there is any update.

Have a nice day!
Rajnoch Filip 41 Reputation points

2023-03-06T10:46:27.6+00:00

So far not, waiting for security department
SokiGuo-MSFT 24,206 Reputation points Microsoft Vendor

2023-03-08T06:05:17.62+00:00

Hi @Rajnoch Filip

If this issue is prevalent in your organization, it is likely that a security policy is in place. If you have any further updates on this issue, please feel free to post back.
Oleksii Garkavenko 0 Reputation points

2023-03-13T16:32:25.4866667+00:00

I have the same issue too.
And also on Windows Server 2016.

Accepted answer

Florian Finder 85 Reputation points

2023-08-24T12:37:23.6933333+00:00
Got final response from Microsoft Support: this is well-known issue with Server 2016 for about a year now. As Server 2016 is out of maintenance support, there will be no fix.
The issue is related to maximum character URL-limitation by OS.
Two possible workarounds:

update to Server 2019

disable SafeLinks Policy in Security AdminCenter (including exeption for BuiltIn-default-policy) and wait 24h

The issue propagates through all tenants starting about a year ago... so some organisations are affected for quite some time and some only recently.
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9 additional answers

Kodomo Yeh(葉子豪) 5 Reputation points

2023-10-03T09:20:32.8833333+00:00

This issue happened in 1.6.00.26474
The Log shows "Opening external URL failed: Unknown error "
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Priyesh 15 Reputation points

2023-10-04T12:21:41.9+00:00

Teams Desktop App version 1.6.00.26474 (64-bit), doesn't allow me to open hyperlinks shared in chat nor can I click through and open Microsoft's own 'Learn More' links against various options within App Settings. Staff on either an older version of Teams 1.6.00.24078 or much newer version 23257.2614.2410.5635 are NOT affected. Appears to be isolated with version 1.6.00.26474. Is this related to the phishing attacks recently? https://blog.knowbe4.com/microsoft-teams-phishing-distributes-malware

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Jodie L 10 Reputation points

2023-10-04T19:14:07.0766667+00:00

Same issue and same version. When I click on links from Microsoft Help, I get a quick popup, but it closes before you can respond.

Kodomo Yeh(葉子豪) 5 Reputation points

2023-10-05T03:07:20.32+00:00

I agree with Priyesh . I've check the log, and this issue happened after TEAMS auto-updated to 1.6.00.26474
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Link in Teams chats not opening Browser

9 additional answers