I have a Lync 2013 client, and whenever I connect to a meeting or start Meet now, it says not responding. 

Fixes tried, 

Un-install Office

Uninstall RealTek Audio Driver 

 The problem seems to be with the Audio driver, because when  I disable the driver I am able to connect to the meeting but still with issues though. 

I am using a Sony Vaio Flip with Windows 8.1

These are always driver issues.  Sometimes the best you can do is go with a generic or older driver if the most recent driver for your firmware doesn't work.  What other issues do you see when connecting to the meeting?

Hi,

1. Please update Audio driver to the latest version and then test the issue.
2. Please try to remove Bluetooth software and then test again.
3. If the issue persists, please try to perform Clean Boot mode to check if there is any conflict with other software.

Best Regards,
Eason Huang 

Hi

I tried to update the Audio Driver - it said it's the latest version however I uninstalled and resinstalled - No luck

I uninstalled again and download the drivers from Sony's website and Realtek's website - No luck

Uninstalled Bluetooth driver and Software after above - No luck

Checked - there isn't any other software conflicting. 

Hi ,

Are you able to log in to Lync ... is their any working available in client. Is your webcam and mic is working properly.

What about a normal voice call ?

What about a video call ?

If any issue found , Let me know for farther troubleshoot..

I am able to sign in to Lync. 

If I do a normal Voice Call or Video Call ... it show's it's calling but within few seconds the screen freezes and not responding. 

Webcam and Mic working properly as I had a Skype call and everything was fine. 

Ok Yogesh,

Do you are using any proxy server in your environment ?

Are you calling from a proxy network client system ?

Are you able to ping the FQDN of your lync communicator server ?

If yes... than try using NATed system or data care for next step of troubleshoot.  

Its neither a proxy server or a proxy network client system.

Didnt get what you mean by NATed System or Data Care?

If I use any other system /PC - Lync works perfectly fine. 

Do the other PCs have the same hardware?

Hi Yogesh,

Install the latest .net framework 4.0 ,silverlight 5.1 and reinstall the proper chipset drivers of your client system. Once all done use Microsoft network troubleshooter for get the exact log.

The problem is solved now! 

What I did was below, 

There were numerous C++ Re distributable programs of 2005, 2008 and I uninstalled all of them from programs. I did not uninstall .Net or any other programs.

This fixed my issue and now I am able to use Lync Client 2013.

Thanks all for your support and guidance - hope this is a permanent solution.