Web App won't allow desktop sharing

Were deploying Lync 2013 in a coexistence state with Lync 2010 but we are having issues with external users using Lync Web App. When an internal user tries to share the desktop the external web app users gets this message:
Call ended because of network connectivity issues.
Whiteboarding, IM and polling works fine
If I use Lync desktop client on the same PC that won't connect it works fine.
If we try this from a user homed on Lync2010 the desktop sharing works fine in the Web APP
Only change we made on the reverse proxy is we published the Lync2013EXTWeb going to the 2013 front end pool.

You can refer below link that may be helpful as well
http://office.microsoft.com/en-us/communicator-help/troubleshooting-sharing-issues-in-lync-web-app-HA101838130.aspx
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Mai Ali | My blog: Technical | Twitter:
Mai Ali

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HELP: "web-app" does not allow "filter"

Here is my web.xml, but everytime I tried to start the web server 6.1, it complains:
info: CORE3282: stdout: PARSE error at line 108 column -1
info: CORE3282: stdout: org.xml.sax.SAXParseException: Element "web-app" does not allow "filter" here.
failure: ContextConfig[simple] WEB3524: Parse error in application web.xml
org.xml.sax.SAXParseException: Element "web-app" does not allow "filter" here.
at org.apache.crimson.parser.Parser2.error(Parser2.java:3160)
The following is my web.xml file, thank you let me know what make it!
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">
<web-app>
<display-name>webapps-simple</display-name>
<description>
The jakarta-tomcat-4.0.3 sample apps ports over to Sun One Web Server.
</description>
<distributable></distributable>
<servlet>
<servlet-name>HelloWorldExample</servlet-name> <servlet-class>samples.webapps.simple.servlet.HelloWorldExample</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorldExample</servlet-name>
<url-pattern>/helloworld</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<taglib> <taglib-uri>http://java.apache.org/tomcat/examples-taglib</taglib-uri> <taglib-location>/WEB-INF/tlds/example-taglib.tld</taglib-location>
</taglib>
<security-constraint>
<web-resource-collection>
<web-resource-name>Protected Area</web-resource-name>
<url-pattern>/jsp/security/protected/*</url-pattern>
<http-method>DELETE</http-method>
<http-method>GET</http-method>
<http-method>POST</http-method>
<http-method>PUT</http-method>
</web-resource-collection>
<auth-constraint>
<role-name>tomcat</role-name>
<role-name>role1</role-name>
</auth-constraint>
</security-constraint>
<filter>
<filter-name>Validation Filter</filter-name> <filter-class>filter.ISValidationFilter</filter-class>
<init-param> <param-name>onlyAllowRequestWithToken</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Validation Filter</filter-name>
<url-pattern>/filtered/*</url-pattern>
</filter-mapping>
</web-app>

I also getting the same error
my web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
     <filter>
          <filter-name>Security Filter</filter-name>
          <filter-class>org.securityfilter.filter.SecurityFilter</filter-class>
          <init-param>
               <param-name>config</param-name>
               <param-value>/WEB-INF/securityfilter-config.xml</param-value>
               <description>Configuration file location (this is the default value)</description>
          </init-param>
          <init-param>
               <param-name>validate</param-name>
               <param-value>true</param-value>
               <description>Validate config file if set to true</description>
          </init-param>
     </filter>
     <filter-mapping>
          <filter-name>Security Filter</filter-name>
          <url-pattern>/*</url-pattern>
     </filter-mapping>

<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
     <init-param>
          <param-name>application</param-name>
          <param-value>ApplicationResources</param-value>
     </init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>abc.jsp</welcome-file>
</welcome-file-list>
<taglib>
<taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
</web-app>
if I change as you said
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
line with
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
then it's not loading the application
pls suggest me
my mail id is [email protected]

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
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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.
Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer".
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Web Apps won't work - Crypto provider access is denied

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03/19/2011 09:37:58.58 w3wp.exe (0x1428)                       0x1BF4 Excel Services Application    Excel
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If your application uses impersonation or the IUSR_MACHINENAME user, then configure the MachineKeys folder security rights and give the following rights to the user:
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Hi Rob,
From the error message "Security.Cryptography.CryptographicException: Access is denied", we can know this issue was caused by access denied. Based on your description, you known that. It is great.
However, I would like to mention that the Excel Calculation Services is running under another application pool other than the SharePoint Web Services Root. So the application pool account may be different.
Please follow these steps to get the application pool account:
1. Open Internet Information Server(IIS) manager.
2. Expand the site "SharePoint Web Services"
3. Select each application under the site
4. Click "Basic Settings..." from the right panel.
5. Repeat step 3 and 4 till we get the application that has path like C:\Program Files\Microsoft Office Servers\14.0\WebServices\Shared\ExcelCalculationServer from the "Basic Settings"
6. Now, get the application pool name from the "Basic Settings"(Edit applicatoin) dialog.
7. Go to Application pools
8. Select the Excel Calculation Services application pool.
9. click "Advanced Settings" from the right panel.
Now, we can get the application pool account from the "Advanced Setting" dialog.
Please make sure this account has permissions to write key to Machine Keys folder.
Alternatively, use the Process Monitor to monitor which account is used to write file to the machine key folder. We can filter the Result column to check who is denied to access the folder.
If you have any more questions, please feel free to ask.
Thanks,
Jinchun Chen
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Hi,
Today I tried to join a scheduled meeting which I've done may times before without any problem.
I was let into the meeting but had no sound and couldn't see the shared presentation. I could see other participants and see typed messages. There was a button in the middle of the screen 'Participate in the sharing session by clicking Rejoin'
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The options button was telling me I had no Audio device. I did and it works correctly.
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I noted that despite using the Lync App many times, when I joined the meeting the App was either missing or wanted to update and I let this happen.
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Hi There,
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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?
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Disabling Video During Application /Desktop Sharing Conferencing ( web conferencing)

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I know its going to be tough. Management wants us to set up a pilot for web conferencing (app/Desktop Sharing only) but due to bandwidth concerns, wants to disable video for web conferencing users. But enable video for these same users during P2P video chat.
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There is a parameter AllowIPVideo of the command Set-CsConferencingPolicy.
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Web App won't allow desktop sharing

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