HI, Every time I try to make a call in Skype for Business (audio or video) the application hangs and needs to be killed.

I can send a IM message from Skype for business fine, but as soon as I try to make a call, the app just hangs.

The metro app Lync works ok, but there I cant use desktop sharing.

Below is the event log from the crash.

I also have the extended logs from Office in a zip file if that would help getting to the bottom of this.

Log Name:      Application
Source:        Application Hang
Date:          10/08/2015 15:17:45
Event ID:      1002
Task Category: (101)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Roland-portable.eurotek.ie
Description:
The program lync.exe version 15.0.4737.1000 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.
 Process ID: 281c
 Start Time: 01d0d376cb60d499
 Termination Time: 81
 Application Path: C:\Program Files\Microsoft Office 15\root\office15\lync.exe
 Report Id: 90663527-3f6a-11e5-8294-971768553cfb
 Faulting package full name:
 Faulting package-relative application ID:

Event Xml:
<Event xmlns="schemas.microsoft.com/.../event">
  <System>
    <Provider Name="Application Hang" />
    <EventID Qualifiers="0">1002</EventID>
    <Level>2</Level>
    <Task>101</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-08-10T14:17:45.000000000Z" />
    <EventRecordID>3812</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Roland-portable.eurotek.ie</Computer>
    <Security />
  </System>
  <EventData>
    <Data>lync.exe</Data>
    <Data>15.0.4737.1000</Data>
    <Data>281c</Data>
    <Data>01d0d376cb60d499</Data>
    <Data>81</Data>
    <Data>C:\Program Files\Microsoft Office 15\root\office15\lync.exe</Data>
    <Data>90663527-3f6a-11e5-8294-971768553cfb</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Binary>55006E006B006E006F0077006E0000000000</Binary>
  </EventData>
</Event>

Can we try the applying this update https://support.microsoft.com/en-us/kb/2889923?

Also are there any performance issue on the computing device?

Hi Roland.

Could you run the command: netsh winsock show catalogThen, look for some Layered Service Provider in the output.

We dont have to install Winsock Layered Service Providers (LSP) software. ( https://technet.microsoft.com/en-us/library/gg398686%28v=ocs.15%29.aspx?f=255&MSPPError=-2147217396 ) and this kind of behavior is common when we have some LSP.

You must unistall them from Windows Control Panel and test once again with SfB.

Regards.