Multicast works for a day and then stops

I'm running multicast in unicast mode on our WLC because I can't enable PIM on wired side yet for a couple reasons. It works consistently on 3 out of 6 WLAN's. And the weird thing is the other 3 WLAN's will work for a day, and when I come in the next day, multicast traffic has stopped flowing. I have verified this through IGMP snooping, using a bonjour browser, testing airplay, and using packet capture on a wireless NIC. 2 of the WLAN's are configured almost identically, but one works consistently day after day, and the other only works for a day after resetting the wlan. I have been coming in the morning and changing a single setting back and forth just to reset the WLAN so it will work for the rest of the day. I'm just writing this to see if someone can think of why it would work fine for the shole day and then stop working by the next morning. It's not an IGMP timeout setting, because it works for much longer than the timeout and behaves the same way even without IGMP snooping on. It started doing this after upgrading to 7.0.240.0. We have very little amount of multicast traffic on wireless, and low channel utilization. It does the same exact thing whether 802.11a or 802.11g so I don't think it has to do with data rates. When I have IGMP snooping on, and on the WLAN's where it's not working, the controller will see the multicast group join message from the client, but the client doesn't see the IGMP query from the controller. It shouldn't be wired config related since it's unicast mode. I've tried with and without broadcasting enabled. Any ideas?

Okay, so I discovered two things, but I still don't know what caused this problem. When I was running 7.0.230.0 I had increased my EAP-Broadcast key interval to 86400 due to a bug. This seems to be related to the fact that on the wlan's where multicast was not working, it stopped by the next day. When I backed this interval down to 3600 the multicast stopped working after an hour instead of a day. So that's why I believe it was somewhat related to the broadcast key, since that key is used for multicast.
What I realized is that multicast was working on all the wlan's on all AP's that had been rebooted since the controller upgrade (They had been rebooted due to a switch losing power). This is weird because all the AP's were rebooted when they received their own 7.0.240.0 software upgrade, so I don't know why they would have needed to be rebooted again. Anyway, I rebooted a few more AP's and multicast works properly on all wlan's on those. I'm just replying to my own thread here in case someone has a similar problem after upgrading your controller - try rebooting all your access points again. Or maybe reboot after changing EAP-Broadcast Key interval.

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Exchange Admin Center 2013 SP1 worked for a day and then stopped working, possible OAB problems

Here is a problem that has me confused. On a fresh Windows Server 2012 R2, I installed Exchange 2013 SP1. It was successful and for the first day everything was working well. I then installed all security updates. The next day, I could no longer log in to
the Outlook Web App or Exchange Admin Center. I get the generic "something went wrong" message, and the only details are X-FEServer: LAKEVIEW-SERVER (our server name). Nothing else. In the event viewer, I have the logs below every time I try to log
in. This is repeatable. Every time I attempt to log in the same 3 things appear in the Application Log.
Event 1003, MSExchange Front End HTTP Proxy [Oab] An internal server error occurred. The unhandled exception was: System.Configuration.ConfigurationErrorsException: Microsoft.Exchange.HttpProxy.ProxyModule,Microsoft.Exchange.FrontEndHttpProxy
does not implement IHttpHandlerFactory or IHttpHandler.    at System.Web.Configuration.HandlerFactoryCache.GetHandlerType(String type)    at System.Web.Configuration.HandlerFactoryCache..ctor(String type)    at System.Web.HttpApplication.GetFactory(String
type)    at System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()    at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Event 4999, MSExchange Common Watson report about to be sent for process id: 2460 (IIS Worker Process, w3wp.exe), with parameters: E12IIS, c-RTL-AMD64, 15.00.0847.032, w3wp#MSExchangeOABAppPool, System.Web, S.W.C.HandlerFactoryCache.GetHandlerType,
S.Configuration.ConfigurationErrorsException, e0bc, 04.00.30319.34009. ErrorReportingEnabled: True
Event 1310, ASP.NET 4.0.30319.0 Event code: 3008 Event message: A configuration error has occurred. Event time: 5/8/2014 9:46:45 AM Event time (UTC): 5/8/2014 4:46:45 PM Event ID: 2c98a65728a7475db0212291e3934ab7
Event sequence: 19 Event occurrence: 9 Event detail code: 0 Application information:     Application domain: /LM/W3SVC/1/ROOT/OAB-1-130440407246522811     Trust level: Full     Application Virtual Path: /OAB
    Application Path: C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\OAB\     Machine name: LAKEVIEW-SERVER Process information:     Process ID: 2460 (IIS Worker Process, w3wp.exe)
    Process name: w3wp.exe     Account name: NT AUTHORITY\SYSTEM Exception information:     Exception type: ConfigurationErrorsException     Exception message: Microsoft.Exchange.HttpProxy.ProxyModule,Microsoft.Exchange.FrontEndHttpProxy
does not implement IHttpHandlerFactory or IHttpHandler.    at System.Web.Configuration.HandlerFactoryCache.GetHandlerType(String type)    at System.Web.Configuration.HandlerFactoryCache..ctor(String type)    at System.Web.HttpApplication.GetFactory(String
type)    at System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()    at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Request information:     Request URL: https://localhost:443/OAB/     Request path: /OAB/     User host address: ::1     User:     Is authenticated: False     Authentication
Type:     Thread account name: NT AUTHORITY\SYSTEM Thread information:     Thread ID: 18     Thread account name: NT AUTHORITY\SYSTEM     Is impersonating: False     Stack
trace:    at System.Web.Configuration.HandlerFactoryCache.GetHandlerType(String type)    at System.Web.Configuration.HandlerFactoryCache..ctor(String type)    at System.Web.HttpApplication.GetFactory(String type)
at System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()    at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
My first guess is to reset the Outlook Address Book by using the Remove-OabVirtualDirectory Exchange commandlet. But I am not so sure this will work because Exchange worked for a day. Any help understanding what caused the problem (and thus help avoid it
happening again) and how to fix it are appreciated. Thanks.

hi,
If nothing works try resetting the Virtual Directories.
For owa
Open Exchange Management Shell (EMS), and then run the following cmdlet to change the authentication method of the "owa" virtual directory to Windows authentication:
set-Owavirtualdirectory -identity "MBX\owa (Exchange Back End)" -WindowsAuthentication $True -Basicauthentication $false
-Formsauthentication $false
Run the following command on both the Client Access and Mailbox servers to restart Internet Information Services (IIS):
iisreset /noforce
For ECP
Start Windows PowerShell.
Type the following commands, and then press Enter after each line:
Add-PSSnapin *exchange*
Set-EcpVirtualDirectory -Identity "MBX\ecp (Exchange Back End)" -WindowsAuthentication $true -FormsAuthentication $false
Run the following command on both the Client Access and Mailbox servers to restart Internet Information Services (IIS):
iisreset /noforce
For Ref: http://technet.microsoft.com/en-us/library/bb123752(v=exchg.150).aspx
I did those commands. But remember, the original error I gave was related to the OAB virtual directory, not ECP or OWA. I also did the Remove-EcpVirtualDirectory, Remove-OabVirtualDirectory, and Remove-OwaVirtualDirectory commandlets and the corresponding
EcpVirtualDirectoryOabOwaVirtualDirecoty ones. I still cannot log in to the Exchange Admin Center. And I still have the same original generic unhelpful error message.
However, there are some changes. After I removed and re-added the virtual directories I no longer received the original error logs given above. I now get this log in the event viewer:
Event 2001, MSExchange Front End HTTP Proxy
[Owa] Failed to load SSL certificate.
The first logs I gave above always appeared after attempting to log in. This log that I gave appears infrequently and is not connected to any log in events. This log occurs only
after a similar log given below:
Event 1001, MSExchange Front End HTTP Proxy
[Owa] Application Starting.

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It is my pleasure to assist.
Say “Thanks!” by clicking the Kudos Star to show your appreciation for the help.
Fixed? Mark this Post “Accept as Solution” to help others find the answers.
Note: You can find “Accept as Solution” only on threads started by you.
Kind Regards,
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Extensions like Ghostery, WOT or AdBlock stop working after two or three times. Restarting the webpage in a new tab the extensions will work again for several times and then stop again. Has anybody an explanation or a workaround for this bug in Safari 5?

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ÇÇÇ

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Multicast works for a day and then stops

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