You’re repeatedly prompted for Exchange credentials after you sign in to Lync

Issue

After you successfully sign in to Skype for Business Online (formerly Lync Online) by using Lync 2010 or Lync 2013, you may experience the following issues:

You receive a message in Lync that says it cannot connect to Exchange.

You're repeatedly prompted to provide a user name and a password to connect to Exchange. You may also receive the following message: 

Credentials are required

 

Note The message that you receive may vary, depending on which service Lync is trying to connect to. You may be prompted for credentials when Lync tries to connect to any of the following services:

Calendar and Free/Busy information from Outlook

Exchange Web Services (EWS)

Response Group Service

Address Book Service

Solution

How to collect log files from Office Communicator, Lync, and Skype for Business Client

To create and collect log files from Office Communicator, Lync, or Skype for Business Client, follow these steps:

1.    Make sure that logging is enabled. To do this, use one of the following methods, as appropriate for your situation:

Skype for Business : Video Interop Server (VIS)

Video Interop Server (VIS)

VIS is a standalone server role implemented in on-premises deployment and provides interoperability with Cisco/Tandberg Video TeleConferencing endpoints (VTC) in this release. (Potentially, other systems will be included in future releases). VIS acts as B2BUA between SfB deployment and Video Gateway (CUCM).                                                                                                                              

Skype For Business : What is New

Microsoft has re-branded Lync 2013 Client as Skype for Business (SfB) Client and released that update on 14 April 2015. It will rebrand next version of Lync server as Skype for business (SfB) server 2015 and will release officially it on 1 May 2015. This article’s objective is to explain what new features it brings along.

Skype for Business: What’s New

Integration of Lync 2013 and Exchange 2013 for Voicemail

1        Integration of Lync 2013 and Exchange 2013 for Voicemail

1.1            Basic Signalling traffic between Lync 2013 and Exchange 2013

1.2            Configure Certificates

1)      Make sure Exchange 2013 and Lync Server 2013 are fully installed and up and running.

2)      After the servers are up and running you must assign server-to-server authentication certificates to both Lync Server 2013 and Exchange 2013

a.       Self-signed certificate with Exchange server name for Exchange Server

b.      Existing Lync Server certificate for Lync 2013

3)      Verify certificate on Lync FE server

Can not run DHCP utility in Windows Server 2012 for Lync 2013

Recently while deploying Lync 2013 for client I came across this little issue.

I copied  DHCPUtil.exe and DHCPConfigScript.bat files as usual to DHCP Server and try to run DHCPUtil.exe but got following error

 

 

To solve this issue, go to "C:\Windows\System32" on your Lync server and copy msvcp110.dll and msvcr110.dll and paste it in System32 folder of DHCP Server.



Enable IM Mute

Turn off IM in a Lync Meeting (Enable IM Mute)

Turning off instant messaging (IM) in a Lync Meeting allows you to help participants stay focused on the meeting content. You can disable IM when scheduling the meeting or during it.

Keep in mind that when you disable IM at the time of scheduling, you can’t turn it back on during the meeting. But if you turn off IM during a meeting, you can turn it back on at any time, to allow shared conversation.
To disable IM when scheduling, you must have Outlook.

Disabling IM when scheduling a Lync Meeting

1. On your Outlook ribbon, click New Lync Meeting.
2. Click Meeting Options on the ribbon.
3. Under Do you want to limit participation?, click Disable IM.
4. Click OK and set up the rest of your meeting as you normally would.

Disabling IM during a Lync Meeting

Any of the presenters can turn IM off or on during the meeting, if it hasn’t been disabled at the time of scheduling.

1. In the meeting window, point to the people icon.
2. Click the ACTIONS tab
3. Click No Meeting IM.

Lync notifies the meeting participants that the IM has been turned off.

To turn IM back on, go back to the ACTIONS tab, and click Allow Meeting IM.