Error | Cause | Type | Resolution |
---|---|---|---|
The service might not be available, or you might not be connected to the Internet. Make sure the server is available. Also, make sure your network connection cable is securely connected. | This issue may occur if Lync can’t detect a suitable Lync Server. | Client | To troubleshoot this issue, see the Make sure that users follow the correct steps when they sign in to Skype for Business Online section. |
Lync was unable to sign in. Please verify your logon credentials and try again. If the problem continues, please contact your support team. | Various causes. | Client | To troubleshoot this issue, see the Users may be unable to sign in unless they first use an incorrect sign-in address section. |
The user name, password, or domain appears to be incorrect. Ensure that you entered them correctly. If the problem continues, please contact your support team. | This issue may occur in scenarios in which a federated user tries to sign in, and this user has a password that's longer than 16 characters. | User Account | To troubleshoot this issue, see the Federated users synchronized from on-premises Active Directory Domain Services can't sign in by using a password that's longer than 16 characters section. |
EXC_BAD_ACCESS | This issue may occur if Lync for Mac tries to integrate or schedule meetings with an Exchange mailbox that isn't hosted in Exchange Online. | Client | To troubleshoot this issue, see the Lync for Mac crashes and the user receives an EXC_BAD_ACCESS error or Clear cached data and corrupted certificates in Lync sections. |