External Meetings using Lync Web App vs Lync 2013 Desktop client

We have LYNC Server 2013 deployed on premise. Our clients are LYNC 2013. When someone external to our organization sends us a Lync meeting request we are able to connect with our Lync 2012 desktop client but only Audio is available. We cannot share
the desktop. If however we connect to the external meeting using the Lync Web App (by specifying
?sl=1 at the end of the meeting url) we are able to use all the services like audio, desktop sharing etc.
I've found the following articles that suggest that the desktop clients are not the preferred choice to connect to external meetings.
http://blog.schertz.name/2011/11/forcing-lync-web-app/
http://www.computer-talk.com/en/blog/item/attendees-cannot-join-your-lync-web-conference
Can anyone advise as to why the desktop clients are restrictive and if there is a fix and if not how can we force users to use the Lync Web App to connect to external meetings?
Our lync 2013 desktop clients use the following ports:
PS C:\Users\am03744ad> Get-CsConferencingConfiguration
Identity                           : Global
MaxContentStorageMb                : 500
MaxUploadFileSizeMb                : 500
MaxBandwidthPerAppSharingServiceMb : 375
ContentGracePeriod                 : 15.00:00:00
ClientMediaPortRangeEnabled        : True
ClientMediaPort                    : 5350
ClientMediaPortRange               : 40
ClientAudioPort                    : 50020
ClientAudioPortRange               : 20
ClientVideoPort                    : 58000
ClientVideoPortRange               : 20
ClientAppSharingPort               : 42000
ClientAppSharingPortRange          : 20
ClientFileTransferPort             : 42020
ClientFileTransferPortRange        : 20
ClientSipDynamicPort               : 7100
ClientSipDynamicPortRange          : 3
Organization                       :
HelpdeskInternalUrl                :
HelpdeskExternalUrl                :
ConsoleDownloadInternalUrl         :
ConsoleDownloadExternalUrl         :

You should be fine using the full Lync client, it's not restricted by default. If there's an issue, it's typically in the networking related to your edge, or the edge of the organization you're federating with.
The reason the web client is preferred by many (not all, and that's not an official Microsoft stance), is simply that if everyone uses the web client, it's a consistent experience for the attendees and you don't have to worry about the status of attendee's Lync
environment or federation.
Can your external users share a desktop with internal users? Can they do it externally in a conference hosted by you? Can the remote organization share desktops with you when connected to your conferences? And in these conferences,
have the marked you as presenter so you can present your desktop?
There's no good way to automatically force users to use the web app each time unfortunately. The other organization would need to hardcode that ?sl=1 into each meeting invite sent.
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SWC Unified Communications

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I've used Project Web App on Sharepoint 2013. After clear job queue about force check-in then I've got this error. This made me can't access some pages in PWA anymore e.g. Project center, Resoure center, PWA setting, etc.

I've used Project Web App on Sharepoint 2013. After clear job queue about force check-in then I've got this error. This made me can't access some pages in PWA anymore e.g. Project center, Resoure center, PWA setting, etc. Who have ever found this problem,
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Hi,
According to your description, after you cleared job queue about force check-in then you can't access some pages in PWA.
Maybe you need to check in the pages which has been checked out.
If you have administrative rights, it is possible to override the check-out via the View All Site Content page:
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http://sharepoint.rackspace.com/sharepoint-2013-troubleshooting-an-access-issue-with-a-custom-master-page
http://technet.microsoft.com/en-us/library/ff758656(v=office.15).aspx
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Lisa Chen
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http://pwmather.wordpress.com/2013/08/01/projectserver-projectonline-highlight-report-example-ps2013-sp2013-excel-bi-office/
http://pwmather.wordpress.com/2013/09/16/projectserver-projectonline-example-report-ps2013-sp2013-office365-bi-excel-powerpivot/
http://pwmather.wordpress.com/2014/07/17/getting-started-with-projectonline-part-9-ps2013-office365-project-ppm-sharepointonline-pm-sp2013/
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Paul Mather | Twitter |
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Please try to install and reinstall Microsoft Lync Web App Plug-in.
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Lync Web App no sound and couldn't see shared desktop

Hi,
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Hi There,
Thanks a lot for reporting this issue. And I am sorry that you are hitting this issue while attending Lync meetings. Following details will help us diagnose it further -
1) Do you have Lync 2010 or Lync 2013 client installed on the machine?
2) Do you get this issue again and again when you join the meeting or it was one-off?
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4) How much time did you wait when UI was showing "Loading" until you killed the Lync Web App from task manager?
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Since the issue only happen on Lync web app that was handled by reverse proxy. The issue maybe related to RP configuration. Please refer to one of the following links to check if the RP configuration are correct.
How to Configure ForeFront TMG 2010 as Reverse Proxy for Lync Server 2010
http://social.technet.microsoft.com/wiki/contents/articles/9807.how-to-configure-forefront-tmg-2010-as-reverse-proxy-for-lync-server-2010.aspx
Using IIS ARR as a Reverse Proxy for Lync Server 2013
http://blogs.technet.com/b/nexthop/archive/2013/02/19/using-iis-arr-as-a-reverse-proxy-for-lync-server-2013.aspx
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http://social.technet.microsoft.com/Forums/en-US/lyncconferencing/thread/e5d8d247-4646-4e2a-b6f0-e0fd8b3a5ace
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http://www.microsoft.com/en-us/download/details.aspx?id=35453
Kent Huang
TechNet Community Support

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This is typically achieved by allowing exceptions in your software control strategy for the required executable;
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Blog:www.gecko-studio.co.uk/
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Only Guest users with Lync Web App

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I would like to allow just "Guest" users when they use the Lync Web App 2013. Is there anyway from Lync Server side to configure this?
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Daniel

Hi,
You can change the publishing rule to block “Join using your corporate credentials” option. For details:
http://blogs.technet.com/b/lyncinternals/archive/2011/11/16/3462376.aspx
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make
sure that you completely understand the risk before retrieving any suggestions from the above link.
Kent Huang
TechNet Community Support

Lync Web App will not load and does not error out

Hi,
Recently I've been receiving invites to Lync 15 meetings. I am able to join the meetings and things work fine until somebody shares their desktop or a presentation. Then I get a message saying Windows firewall has blocked an app and asks if I want
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When I look in Task Manager, I can see the Lync Web App running with a steady stream of I/O. But the entire Lync meeting will not render. If I kill the Lync Web App from Task Manager, then the Lync meeting immediately works.
System: Win 7 pro 64, IE 9, AMD Athalon dual core chip, 4 GB RAM, tons of disk space, DSL 700K connection
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JAS.
JAS

Hi There,
Thanks a lot for reporting this issue. And I am sorry that you are hitting this issue while attending Lync meetings. Following details will help us diagnose it further -
1) Do you have Lync 2010 or Lync 2013 client installed on the machine?
2) Do you get this issue again and again when you join the meeting or it was one-off?
3) When you killed "Lync Web App" from task manager, was audio flowing through even after that? Were you still attending the meeting from the browser?
4) How much time did you wait when UI was showing "Loading" until you killed the Lync Web App from task manager?
Thanks.
ManuMSFT
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"Lost connection to all Lync Web App locations." followed by immediate restoration

Lync Web App is working fine, but occasionally I see the following events:
LS Data MCU - 41029 - Lost connection to the with Lync Web App
LS Data MCU - 41031 - Lost connection to all Lync Web App locations
This events fire twice, once for both internal and external. Immediately after the last event, the following event fires indicating service is restored:
LS Data MCU - 41030 - Connection to the Lync Web App has been restored
This happens for internal and external. Any ideas why this would happen?

Please try to restart the Lync Web Conferencing Service on Lync Front End Server.
Try to install the latest update for Lync Server.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

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Hey folks,
I've run into a little big problem due the Lync Web App installation via mstsc on a stand alone Terminal Server 2008 SP2 64 Bit. When I tried to install the Lync Web App Plugin via
mstsc and standard user I get the message:
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The next thing I did is to disable the UAC and DEP, but same problem as above. I also tried to extract the install EXE for the MSI packages to allow the installation. But did not work.
After I searched the internet for an answer relating to this problem I've had to create or change a RegEdit entry. So I switched to the registry to:
HKEY_Local_Machine\Software\Policies\Microsoft\Windows\Installer
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Before you install the application, change your user mode to installation mode.
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Lisa Zheng
TechNet Community Support

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