The following error message has displayed when I logon to Windows 7. Lync starts up at the same time with Windows:

This error message shows "Microsoft Lync has stopped working ... please close the program".

However, Lync is working fine even after I click on "close the program. The detail information on the error message is as below:

Faulting application name:   UcMapi.exe

version:                                        4.0.7577.0

time stamp:                                4cc138ea

Faulting module name:         MSVCR90.dll

version:                                        9.0.30729.6161

time stamp:                                4dace5b9

Exception code:                        c0000005

Fault offset:                                0003b4a8

OS version:                                 6.1.7601.2.1.0.256.27

Locale ID:                                     1041

There are no tangible ill effects, however, I want to know the error reason.

Is your lync is integrated with exchange ? it seems it might be trying to connect with outlook or looking for .ost file and gettign this error, try to re-install lync communicator.

Please mark it as answred if that resolves your issue

Thank you, Patnaik, for your prompt reply.

Yes, our Lync is integrated with Exchange. I wil check and try to re-install Lync client.

Thanks,

Akira 

Hi,

I re-installed Lync client but this error was not fixed. When I logged off and logged in to Windows, this error ocurred, again.

Thanks,

Akira

Hi Akira,

please open run (Windows + R) the type dxdiag and click ok.

Do you get any error Message related to Sound or GFX driver?

Do you have any webcam issue?

Hi,

I have executed dxdiag. However, I could not find any error.

Thanks,

Akira

Sound and webcam is working as expected?

I would recomend to update sound ,gfx and web cam driver to see if problem is still there.

Usually when Lync crashes during start its related to one of these hardware.

Hi,

However, Lync is working fine even if the error message appeared. Therefore, Lync did not crash.

Thanks,

Akira

Hi,

Please try to uninstall the default Sound Card, VGA Device/Video Card, Graphic Card. Then restart Lync 2010 to test the issue.

Please try to uninstall the latest Lync 2010 update (especially for the Security Update), then restart Lync 2010.

Best Regards,
Eason Huang

Hello,

I found that this problem is caused by Outlook 2010/SP2 with KB2956128 and KB2956203 patches  Actually, this problem does not occur on Outlook/SP1. Moreover, KB2956128 and KB2956203 patches are not applied to Outlook 2010/SP1.

Is it make sense?

Regards,
Akira