Symptoms

Assume that you apply update 2919355 on a Windows 8.1-based computer. You make a Microsoft Lync video conference call by using a Microsoft RoundTable device, Polycom CX5000, or a Polycom CX5000 HD Unified Conference Station. In this situation, Lync displays a distorted panoramic video.

Resolution

To resolve this issue, install the hotfix that is described in this article.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 8.1.

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 8.1 file information notes

Important Windows 8.1 hotfixes and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8.1" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Mfcore.dll

12.0.9600.17109

2,144,984

26-Apr-2014

20:14

x86

For all supported x64-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Mfcore.dll

12.0.9600.17109

2,144,984

26-Apr-2014

20:14

x86


Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates


Additional file information for Windows 8.1

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,589

Date (UTC)

27-Apr-2014

Time (UTC)

04:59

Platform

Not applicable

File name

X86_1dc050129b2e22df2e6848b37ea7b421_31bf3856ad364e35_6.3.9600.17109_none_ed811b62a8a719ae.manifest

File version

Not applicable

File size

694

Date (UTC)

27-Apr-2014

Time (UTC)

04:59

Platform

Not applicable

File name

X86_microsoft-windows-mfcore_31bf3856ad364e35_6.3.9600.17109_none_85d3d0fa7285ec2e.manifest

File version

Not applicable

File size

245,733

Date (UTC)

27-Apr-2014

Time (UTC)

04:59

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1

File property

Value

File name

Amd64_ed21efb93e47fcc19f91c3be6b3cd95d_31bf3856ad364e35_6.3.9600.17109_none_55fef5fcac55c75b.manifest

File version

Not applicable

File size

1,038

Date (UTC)

27-Apr-2014

Time (UTC)

05:06

Platform

Not applicable

File name

Amd64_microsoft-windows-mfcore_31bf3856ad364e35_6.3.9600.17109_none_e1f26c7e2ae35d64.manifest

File version

Not applicable

File size

245,737

Date (UTC)

27-Apr-2014

Time (UTC)

05:06

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,597

Date (UTC)

27-Apr-2014

Time (UTC)

05:06

Platform

Not applicable

File name

Wow64_microsoft-windows-mfcore_31bf3856ad364e35_6.3.9600.17109_none_ec4716d05f441f5f.manifest

File version

Not applicable

File size

245,735

Date (UTC)

27-Apr-2014

Time (UTC)

05:06

Platform

Not applicable




The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.


Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!

×