Receiving messages but cannot send. It's often the case that I'll receive a notification on Mac that I have a message (via notifications) and - if I ever respond using the Mac functionality - something happens that prevents me from sending any responses with the SfB client.
This problem affects both the MSI and C2R versions of Skype for Business 2016 and Skype for Business 2015 Cause This problem occurs because Windows 7 is not configured to support the TLS 1.2 protocol, and the Federated partner disabled support for TLS 1.0 and 1.1 in their on-premises environment. Skype for Business Troubleshooting: We couldn't connect to the presentation because of network issues All Skype for Business Clients from remote locations were unable to present the screen sharing through meet now, peer to peer and conference.
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Problem
Consider the following scenario.
You're using Internet Explorer or Microsoft Edge to access Office Online Web App in the SharePoint Online environment.
When you click the Skype button, you receive the following error message:
'We couldn't sign you in. Please try to sign in again or refresh the page.'
Solution
For Skype for Business Online (formerly Lync Online) chat integration to work in Office Online Web App, remove the SharePoint Online URL from the Local intranet or Trusted sites settings under Internet Options.
Note
The Open with Explorer feature requires that your SharePoint Online URLs are included in your Trusted Sites list. If you want to use the Open with Explorer feature, you must add this URL back to your trusted sites.
More Information
Problem
Consider the following scenario.
You're using Internet Explorer or Microsoft Edge to access Office Online Web App in the SharePoint Online environment.
When you click the Skype button, you receive the following error message:
'We couldn't sign you in. Please try to sign in again or refresh the page.'
Solution
For Skype for Business Online (formerly Lync Online) chat integration to work in Office Online Web App, remove the SharePoint Online URL from the Local intranet or Trusted sites settings under Internet Options.
Note
The Open with Explorer feature requires that your SharePoint Online URLs are included in your Trusted Sites list. If you want to use the Open with Explorer feature, you must add this URL back to your trusted sites.
More Information
This issue occurs because SharePoint Online URL domains (*.sharepoint.com) are typically added to the Trusted or Local intranet zones in Internet Explorer or Microsoft Edge. For more information, see the following Microsoft website:
However, authentication into Skype for Business Online is performed by using a different OrgID URL, which resembles the following:
When SharePoint Online creates an iframe to Skype for Business Online to enable integration, it must first authenticate. When it does this, it redirects to the OrgID URL in the iframe. Because an iframe inherits the zone of the parent, the page that's loaded in the iframe is also in the intranet zone. Internet Explorer stores cookies independently for each security zone. Therefore, the authentication cookie in the OrgID domain that's in the Internet zone can't be accessed by the iframe that's in the intranet zone. And because users can't enter their credentials to authenticate in a hidden iframe, authentication fails.
Skype For Business We Couldn 27t Send This Message Machine
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