- Can’t sign in. Please check your account information and try again.
- Can’t connect to the server right now. Please try again.
- The server name or sign-in address is incorrect. Please check them and retry.
- Make sure that the sign-in address and password are entered correctly. In most cases, the domain and user name are not required.
- Expand More Details, and then click Clear My Sign-in Info to remove any cached server names or sign-in addresses.
- Office 365 Skype for Business Online (formerly Lync Online) administrators can use the Remote Connectivity Analyzer to make sure that the necessary DNS records for Skype for Business Online are configured. To do this, click the Office 365 tab, and then click Office 365 Lync DNS Test.
For more information, see the following Microsoft Knowledge Base article:2566790 Troubleshooting Skype for Business Online DNS configuration issues in Office 365
- Switch between Wi-Fi and carrier data to try to isolate the issue. Verify connectivity to other websites and services over both kinds of connections.
- Try to sign in by using other clients and computers. If you can't sign in on any device, see the following Microsoft Knowledge Base article: 2541980 How to troubleshoot sign-in issues in Skype for Business Online
- You recently updated the Operating System (OS) software for your device. Before you applied the update, the Lync Mobile 2013 client worked as expected. After you installed the update, the Lync Mobile 2013 client fails. Be aware that after you contact Microsoft technical support for help, you may have to contact the manufacturer of your device to obtain the correct resources for the issue.
- The user’s credentials aren't correct. Either the password is incorrect or the sign-in address was entered incorrectly.
- The server is too busy or unreachable over your current connection.
- The server can't be found, based on the sign-in address. Either the domain was typed incorrectly or the necessary DNS records for mobile connectivity aren't set up.
- You installed updated OS software and resources or settings may have to be configured for Lync Mobile 2013 to work correctly.
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Article ID: 2806012 - Last Review: Dec 28, 2016 - Revision: 1