Users may be unable to join shared channels using some links to messages in Microsoft Teams

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may have been unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affected links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users could've bypassed this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Final status: We've confirmed that the deployment of our fix has completed to all affected environments and resolved this event. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may have been impacted. Start time: Wednesday, July 1, 2026, at 12:00 AM UTC End time: Friday, September 18, 2026, at 5:55 PM UTC Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation caused the affected links to be malformed, which resulted in impact. Next steps: - We're reviewing the responsible update to better understand what led to the malformed links that resulted in impact and prevent similar future occurrences. This is the final update for the event.

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: The deployment of our fix is nearing completion but is taking additional time. We now anticipate the deployment will complete by Friday, September 18, 2026. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Start time: Wednesday, July 1, 2026, at 12:00 AM UTC Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Friday, September 18, 2026, at 9:00 PM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: Many users should see remediation from this issue as the deployment continues to make it to all affected areas. We have an updated timeline for its completeness and now anticipate that all areas should have the deployment by our next communication time. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Thursday, September 17, 2026, at 9:00 PM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: We're continuing to monitor as the fix deploys and we expected most users will see relief from this issue by the end of September 4, 2026, but it may take until the end of September 7, 2026 to see complete remediation. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Tuesday, September 8, 2026, at 9:00 PM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: The fix is continuing to deploy successfully, and affected users may begin experiencing recovery as deployment progresses. We expect the deployment to be fully completed by the end of the week of September 4, 2026. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Thursday, September 3, 2026, at 9:00 PM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: We've started deploying the fix, which we anticipate may take approximately two weeks to complete. We'll aim to provide a more accurate resolution timeline by our next scheduled update. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Friday, August 28, 2026, at 9:00 PM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: We've determined that a recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. We've developed a fix to resolve this issue, and we're initiating deployment of this fix to the impacted service environments. Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted. Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact. Next update by: Tuesday, August 25, 2026, at 1:30 AM UTC

Title: Users may be unable to join shared channels using some links to messages in Microsoft Teams User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams. More info: This issue specifically affects links generated using the “Copy Link” options within the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there. Current status: We're investigating a potential issue with the Microsoft Teams service and checking for impact to your organization. We'll provide an update within 30 minutes.