Trying deleting the sign-in info by clicking the “Delete sign-in info” button.ģ. Upgrade the Skype for Business for Mac to the latest version.Ģ. Here I’d like to offer you some more suggestions:ġ. Since the user has no problem signing to Skype for Business for Mac on other Macs running same version, it means this is a specific Mac problem. Did this issue happen only when you signed into Skype for Business for Mac with a specific Mac machine? If you sign into Skype for Business for Mac with your Office 365 account on another Mac machine, does the same issue happen?
Is the Skype for Business for Mac the latest one?ĥ. Have you deployed a special environment for your Office 365 organization such as ADFS, Hybrid, on-premise Skype for Business server, etc.?Ĥ. Regarding 'I tried to create new keychain and also log in as other user on the computer, but the problem is the same', do you mean that this issue happened to multiple users inside your organization?ģ. Please give me a screenshot of the error message for analysis.Ģ. If the problems persists after referring to the article above, I'd like to collect some more information to troubleshoot the issue:ġ. Since you've got an error message saying that this doesn't look like a valid user ID, I'd like to introduce an article to you for your reference:
