Troubleshoot problems with Skype for Business Online
Important
Skype for Business Online operated by 21Vianet in China will be retired on October 1, 2023. If you haven't upgraded your Skype for Business Online users yet, they will be automatically scheduled for an assisted upgrade. If you want to upgrade your organization to Teams yourself, we strongly recommend that you begin planning your upgrade path today. Remember that a successful upgrade aligns technical and user readiness, so be sure to leverage our upgrade guidance as you navigate your journey to Teams.
Skype for Business Online, excluding the service operated by 21Vianet in China, was retired on July 31, 2021.
Sometimes things aren't working like you expect. Here's a list of articles that can help you fix problems, whether you're administrating Skype for Business Online or helping your users solve their problems.
Troubleshoot admin issues for Skype for Business Online
You can get answers for most of your Skype for Business Online questions in the article Check for common causes of Skype for Business Online sign-in errors. The following KB article also includes many troubleshooting resources and error code references: Troubleshooting Skype for Business Online sign-in errors for administrators.
For dial-in conferencing issues, see Audio Conferencing troubleshooting and known issues.
Additional help for Skype for Business Online admin issues
Skype for Business Online users can't communicate with external contacts
Skype for Business and Lync Troubleshooting Guide (downloadable PDF)
Diagnosing and resolving PowerShell connection problems with Skype for Business Online
Help your Skype for Business Online users
Most of the problems faced by Skype for Business Online users are related to forgotten passwords. You can solve most of the sign-in problems by following the instructions in these two articles:
Additional resources to help your Skype for Business Online users
Still need help? Contact support.
As an admin for Microsoft 365 Apps for business, you get free access to our knowledgeable support agents for pre-sales, account, and billing support, and for help resolving technical issues. You can also contact support on behalf of Microsoft 365 and Office 365 users in your organization.
Note
If you're using Office 365 operated by 21Vianet in China, please contact the 21Vianet support team.