Windows Client stopped working all of a sudden. User can work on a different computer , Web App works and mobile app works.

We’re Sorry – We’ve run into an issue.

Try again

if that doesn’t work try signing out and back in.

We need you to Sign in ! Either your password changed or the server needs your sign-in info again.

We weren’t able to connect. Sign in and we’ll try again. Sign in.

Same Solution for users showing a unknown user in Windows thick client

Solution –

Tried Quitting the application

Tried restarting the computer

Web https://teams.microsoft.com works.

–

Start – run –

%AppData%\Microsoft\

Rename

Teams Folder to Teams.old

Restart Teams client.

Users are generated with a lot of voice mail alerts/emails. where in some part of the regions users are not a big fan of voice mails. So lets see how to disable voice mail completely in the environment.

• From noreply_skype_voicemail_42e4000-ce0f-423f-fff-gfffaf36d2cc@localhost
• Subject: Voice Mail (3 minutes and 47 seconds)

You can disable voice mail only using Skype for business PowerShell. (Set-CsTeamsCallingPolicy)

Skype for Business Online, Windows PowerShell Module

https://www.microsoft.com/en-us/download/details.aspx?id=39366

Import-Module SkypeOnlineConnector
$sfbSession = New-CsOnlineSession
Import-PSSession $sfbSession

To check Default settings

Get-CsTeamsCallingPolicy | Fl Identity,*voice*

To Disable Voice Mail

Set-CsTeamsCallingPolicy -Identity Global -Allowvoicemail AlwaysDisabled

To Revert Back

Set-CsTeamsCallingPolicy -Identity Global -Allowvoicemail UserOverride

Available Options – AlwaysEnabled,AlwaysDisabled,UserOverride

Someone has already setup Teams for your Organization it happens where user is using the same Company email in Outlook.com/live.com.Some users sign up to Outlook.com with Company email which they do it my mistake or in other cases user had a MSDN License where they had to use the company email to use Outlook.com (Personal Account) to retrieve visual studio licenses.(As they never had Azure AD Auth on that time). It also doesn’t allow the user to sign in sometimes intermittently. if you use Web App Teams http://teams.microsoft.com/  it will work without any issues.As the initial prompt is visible to choose between a work and personal account. It happens only on the windows thick client.

Lets see how to get into Outlook.com/live.com using Company email and remove it . So that work account start functioning Properly using azure AD Authentication.

Current Architecture – Azure AD Connect Synchronizes the Active Directory and Hybrid is in Place with Office 365.

Lets see how to gett inside the live account and rename the sign in email in Outlook.com. So that company account starts working.

Choose “Sign in”

https://outlook.live.com/owa/

even though you know this user must not be using this page.

Choose Forgot Password

Get the code

Enter the code

Reset your Password

Your Password is Changed

Choose “My Profile”

Choose “Manage how you sign in to Microsoft”

Enter code again

Now add an additional email – So that we can remove the company email from outlook.com

Added an Outlook Address.

Make Primary

Now remove the Company Email

Now remove the company domain/alias from Outlook.com/live.com

Now your Company Email is Removed from Outlook.com

Now leave it for 20 minutes – Sign in to Teams. You are into your Company Account now without any issues.