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Summary: Manage two-factor authentication in Skype for Business Server.

• Jul 24, 2019  After you turn on two-step verification or set up the Authenticator app, you may run into issues if you use apps or older devices (like Windows Phone 8 and Xbox 360) that don't support two-step verification. If you have two-step verification turned on and an app isn't prompting you to enter a security code when you sign in, you may be able to sign in with an app password instead.
• Dec 12, 2017  However, if App password is enabled, users need to paste the app password in the password box when prompted to enter a password. From what you describe, it is normal behavior that we should input the app password rather than our own password in Skype for Business on Mac after app password is enabled, we have all possibilities that are offered.

Two-factor authentication provides improved security by requiring users to provide two forms of authentication or identification, namely a user name/password combination and a token or certificate. This is also known as 'something you have, something you know.'

Dec 21, 2018  The objections have compelled Microsoft to postpone plans to do away with the Mac version of the Skype Meetings App until sometime next year, after initially announcing the browser download would become unavailable as of this month. Microsoft claims that the audio, video and screen-sharing features of the Skype for Business desktop app are more reliable than the Skype Meetings App. If you forgot your Skype password, reset your password now. If you forgot your Skype password but do not have access to your email or phone to verify your identity: Go to the account recovery form.; You will be asked for your email, phone number and Skype name as. Skype for Business on Mac - available with Mac OS X El Capitan and macOS Sierra; Lync for Mac 2011 - available with Mac OS X Yosemite; Skype for Business mobile clients can be installed by visiting your App Store; Note: Windows users, if you are running Office 2010 or earlier, you need to upgrade to Office 2013 to use Skype for Business. This article covers how users who do not have a Skype for Business account can attend a Skype for Business meeting using the Skype for Business Web App. Minimum hardware/software requirements: Windows 7 or Mac OS X 10.8 with Internet Explorer 11 or Firefox 12 or Safari 5 or Chrome 18. For more on requirements, view this article from Microsoft. Jan 31, 2018  Since the user in question is not enabled for MFA, there is no Token (App Password) that can be used. She should just be using her email address and password like every other user. Skype for Business Online - OFF by default. Exchange Online - OFF by default.

A typical example of two-factor authentication with a certificate is the use of smart cards. A smart card contains a certificate associated with the user account, and can be validated against user and certificate information stored on a server. By comparing the user information (user name and password) to the certificate provided, the server validates the credentials and authenticates the user.

Consider the following subjects when configuring a Skype for Business Server environment to support two-factor authentication.

Client Support

The Cumulative Updates for Lync Server 2013: July 2013 desktop client and the Skype for Business client are the only clients that currently support two-factor authentication.

Topology Requirements

Customers are strongly encouraged to deploy two-factor authentication using dedicated Skype for Business Server with Edge, Director, and User Pools. To enable passive authentication for users, other authentication methods must be disabled for other roles and services, including the following:

Unless these authentication types are disabled at the service level, all other versions of the client will be unable to sign in successfully once two-factor authentication is enabled within in your deployment.

Skype For Business App Store

Skype for Business Service Discovery

DNS records used by internal and/or external clients to discover Skype for Business services should be configured to resolve to a Skype for Business server that is not enabled for two-factor authentication. With this configuration, users from Skype for Business Pools that are not enabled for two-factor authentication will not be required to enter a PIN to authenticate, while users from Skype for Business Pools that are enabled for two-factor authentication will be required to enter their PIN to authenticate.

Exchange Authentication

Customers who have deployed two-factor authentication for Microsoft Exchange may find that certain features in the client are unavailable. This is currently by design, as the Skype for Business client does not support two-factor authentication for features that are dependent on Exchange integration.

Contacts

Skype for Business users who are configured to leverage the Unified Contact Store feature will find that their contacts are no longer available after signing in with two-factor authentication.

You should use the Invoke-CsUcsRollback cmdlet to remove existing user contacts from the Unified Contact Store and store them in Skype for Business Server before enabling two-factor authentication.

Skill Search

Customers who have configured the Skill Search feature in their Skype for Business environment will find that this feature does not work when Skype for Business is enabled for two-factor authentication. This is by design, as Microsoft SharePoint does not currently support two-factor authentication.

Credentials

There are a number of deployment considerations involving saved Skype for Business credentials which may impact users who are configured to use two-factor authentication.

Deleting Saved Credentials

Users should use the Delete my sign-in info option in the Skype for Business client and delete their SIP profile folder from %localappdata%MicrosoftOffice15.0Skype for Business before attempting to sign for the first time using two-factor authentication.

DisableNTCredentials

With the Kerberos or NTLM authentication method, the user's Windows credentials are used automatically for authentication. In a typical Skype for Business Server deployment where Kerberos and/or NTLM is enabled for authentication, users should not have to enter their credentials every time that they sign in.

If users are unintentionally prompted for credentials before they are prompted to enter their PIN, the DisableNTCredentials registry key may be unintentionally configured on client computers, possibly through Group Policy.

To prevent the additional prompt for credentials, create the following registry entry on the local workstation or use the Skype for Business administrative template to apply to all users for a given pool using Group Policy:

SavePassword

When a user signs in to Skype for Business for the first time, the user is prompted to save his or her password. If selected, this option allows the user's client certificate to be stored in the personal certificate store and the user's Windows credentials to be stored in the Credential Manager of the local computer.

The SavePassword registry setting should be disabled when Skype for Business is configured to support two-factor authentication. To prevent users from saving their passwords, change the following registry entry on the local workstation or use the Skype for Business administrative template to apply to all users for a given pool using Group Policy:

AD FS 2.0 Token Replay

AD FS 2.0 provides a feature referred to as token replay detection, by which multiple token requests using the same token can be detected and then discarded. When this feature is enabled, token replay detection protects the integrity of authentication requests in both the WS-Federation passive profile and the SAML WebSSO profile by making sure that the same token is never used more than once.

This feature should be enabled in situations where security is a very high concern such as when using kiosks. For more information about token replay detection, see Best Practices for Secure Planning and Deployment of AD FS 2.0.

External User Access

Skype For Business Web App

Configuring an ADFS Proxy or Reverse Proxy to support Skype for Business two-factor authentication from external networks is not covered in these topics.

See also

Skype is one of the greatest communication applications, widely available and accessible on macOS, iPadOS, iOS, Windows, and Android phones. It comes with the most commonly used features such as Chat, Video Calls, and Voice Calls irrespective of devices. So far, we were used to relying on Skype to make Video Calls across the globe, but nowadays there are dozens of Skype Alternatives available, the one we use is FaceTime on iPhone or maybe WhatsApp.

WhatsApp and FaceTime may have taken over Skype for personal use, but when it comes to business purposes, no one can compete with Skype for Business. Microsoft has especially designed the Skype for Business, for large organizations to handle and communicate with clients and obviously in their own department. For whatever reason, if you don’t need Skype for Business then here’s the quick walkthrough on how to uninstall Skype for Business on Mac and MacBook. I Strongly recommend to Enable 2 Factor Authentication for Skype from unauthorized access.

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How to Clean Uninstall Skype for Business in 3 Steps

Step 1: Sign Out Your Skype Account and Close App, Uninstall Skype

The tutorial to uninstall Skype for Business from Mac and MacBook is divided into two parts, if you only want to delete Skype for Business app from Mac, then following the first part would be enough. The second part shows how to clean uninstall Skype for Business from MacBook and Mac.

1. Launch the Skype for Business on your Mac.
2. Now on the top menu bar, click on Skype for Business.
3. Click on Sign Out.
4. The Sign In window will appear, now you can close the Skype for Business.
5. To remove Skype for Business from the MacBook Dock, right-click on the icon and select Quit.
6. Finally, its type to drag the Skype for Business app to the Trash to do so, open Finder.
7. Click Go on the menu bar.
8. Select Applications.
9. Find the Skype app under the Applications folder.
10. Locate Skype for Business and drag it to the Trash.
11. Now, Skype is successfully uninstalled from your Mac. Now you have to remove some cache and Restore file that is used in Future skype installation and Password as well.

This was the basic steps to delete Skype for Business, so if you are not working for an enterprise or the Skype for Business is stored in your personal Mac, MacBook, you might not want to run few commands to completely delete Skype for Business from Mac, as it needs expertise and sort of grip on how to use Terminal, otherwise you may end up into the big problem.

Skype For Business Mac App Password Download

Since most of the IT Companies use the Skype for Business, they may ask you to remove it completely, if it is a case, then follow the below steps to uninstall the Skype for Business’s related files and data from Mac. Again a word of warning, if you are not sure how to use Terminal I’d suggest you hand over your Mac, MacBook to expert, and let them do this task for you.

Apple Skype For Business App

Step 2: Remove Skype Files From Mac File System Using Terminal

Here’s how to clean uninstall Skype for Business from MacBook, iMac, Mac,

1. Launch Finder on your MacBook, Mac.
2. On the top menu bar, click on Go > Applications.
3. Then go to Utilities Folder.
4. From the list of apps open Terminal.
5. Run the following commands in Terminal,

• sudo rm -rf /Applications/Skype for Business.app
• sudo rm -rf /Library/Internet Plug-Ins/MeetingJoinPlugin.plugin
• defaults delete com.microsoft.SkypeForBusiness || true
• rm -rf ~/Library/Containers/com.microsoft.SkypeForBusiness
• rm -rf ~/Library/Logs/DiagnosticReports/Skype for Business_*
• rm -rf ~/Library/Saved Application State/com.microsoft.SkypeForBusiness.savedState
• rm -rf ~/Library/Preferences/com.microsoft.SkypeForBusiness.plist
• rm -rf ~/Library/Application Support/CrashReporter/Skype for Business_*
• rm -rf ~/Library/Application Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/com.microsoft.skypeforbusiness*
• rm -rf ~/Library/Cookies/com.microsoft.SkypeForBusiness*
• sudo rm -rf /private/var/db/receipts/com.microsoft.SkypeForBusiness*
• rmdir ~/Library/Application Scripts/com.microsoft.SkypeForBusiness
• find -f /private/var/db/BootCaches/* -name “app.com.microsoft.SkypeForBusiness*” -exec sudo rm -rf {} +

Note: You can prefer the latest commands from the Microsoft Support, in case if any of the mentioned commands are altered by Microsoft.

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Skype For Business App Password Mac

Step 3: Remove Skype Login Details From MacBook Max

1. Again open Finder.
2. Click on Go > > Applications.
3. Next, Find Utilities Folder >Keychain Access
4. From the login keychains, removeSkype for Business.

This is it!