

Open the registry editor (Start + R -> type regedit -> Enter), go to “HKEY_CURRENT_USER\Software\Microsoft\office\16.Mobile Devices MSN Music, Movies & TV Office Insider Outlook Skype. Go to “C:\Users\Erwin\AppData\Local\Microsoft\Office\16.0\Lync\Tracing\” and Delete All files. To disable Office 2016 from using modern authentication the user will need a.Go to “C:\Users\AppData\Local\Microsoft\Office\16.0\Lync” and delete the specific user’s sip (Session Initiation Protocol) folder.Then – type in the login details and password again and try to log in. Open Skype for Business login window and click on “delete my sign-in info”. Uninstalling or reinstalling Office 365 software is not going to help you. There are a couple of solutions here. If the problem continues, please contact your support team”. You will have to add these records to DNS of your main domain. There will be an option to export records as csv.

You can find such records in Office 365 admin center under Domains menu and pressing on your main domain. “Can’t sign in to Skype for Business – There was a problem acquiring a personal certificate required to sign in. You also have to have DNS records for Skype for Business to be able to talk to external users.

If you don't hear anything when you play the sample sound, make sure your speakers or headphones are turned all the way up (some headphones have physical volume buttons) and that the on-screen settings are at 10.You should hear sound in your headset or speakers. To check the sound in Skype to make sure that it's using the right speakers, select Test audio under the Speakers option.Finally, unplug the microphone and then reattach it. If there aren't other ones to pick from, make sure the microphone is plugged in, powered on (if it has a power switch), and has batteries (if wireless).If the microphone doesn't work with Skype, select the menu next to Microphone and see if there are any other options you might have the wrong device selected.As you talk, you should see the bar light up. With that setting open, notice the volume area under Microphone.
