Viewing Silverlight Apps on the Web behind Corporate Firewall

08-22-2007 11:29 AM |

Hi all,

I am new to SL(and very impressed with what I have seen) however, I cannot seem to view SL apps when at work. I have installed the latest SL plugin, and it has reported as installing okay. But whenever I view a page with a SL app in, I get the picture telling me to install.

 Naturally, I think my corporate network/firewall is interfering. We are running on ISA server. Does anyone know what configuration is required to allow the SL plugin to be viewed?

 Many Thanks,

Rob

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-22-2007 3:52 PM |

All the network traffic should be via http and port 80, so I don't see why your firewall would interfere.  I think it's more likely that your SL installation is messed up.    Can you get other multimedia content? (i.e. Windows Media Video, Flash etc.)  If you have IIS running on your local machine, you could try downloading one of the samples to your wwwroot or sticking some simple SL content on a local web page.  If you can't get SL content locally then the firewall isn't the culprit.

It would help to have your SL version number. You can get it with one of these commands (depending on whether you're running X86 or X64):

 reg query HKLM\Software\Microsoft\Silverlight /v Version

reg query HKLM\Software\Wow6432Node\Microsoft\Silverlight /v Version

It would also help to see a process monitor log of IE trying to load some SL content.

Thanks,

Bridgette

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-23-2007 4:11 AM |

Bridgette,

 Thanks for your response.

I am in meetings all day today, so will be unable to test your suggestion on running local apps, but I will aim to do this tomorrow.

I ran the registry query and it returned:

HKEY_LOCAL_MACHINE\Software\Microsoft\Silverlight
    Version     REG_SZ  1.1.20730.0

Whats the best way for me to get a process monitor log?

Thanks for your support.

Rob

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-23-2007 10:01 PM |

You can get process monitor here: http://www.microsoft.com/technet/sysinternals/utilities/processmonitor.mspx 

 Run Procmon.exe and set a filter so it only includes processes named iexplore.exe (or whatever browser you're running), try to load som SL content and then do File->Save in procmon.  It's easiest for me to work with a .PML file.  If you email me or send me a PM through this forum, we can make arrangements for getting the file to me.

 Thanks!

 PS  Do you have similar problems running 1.0 inside the firewall?  Dumb question, are you sure that you're trying to access 1.1 content, since you have 1.1 installed?  What content have you tried?  I know that some sites had problems with some changes that occured between the MIX and alpha refresh releases, so it might be a problem with the sites you're trying to view.

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-24-2007 3:41 AM |

Hi Blanders,

Thanks for your response, and pointers on ProcessMonitor, I know it existed, as well as RegMon, and they can both be incredibly useful tools (they look very powerful) but I never used them!

I have captured the process information for iexplore while browsing to www.tafiti.com. No joy on it loading.

I also went to the Sivlerlight gallery to view a 1.0 app (the photo gallery) and still no joy.

I did notice in the process info, that the following reg info kept coming up.. Do you think this is the root of the problem?

65995 08:31:39.5897761 iexplore.exe 1376 RegOpenKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} SUCCESS Desired Access: Maximum Allowed
65996 08:31:39.5898110 iexplore.exe 1376 RegQueryKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} SUCCESS Query: Name
65997 08:31:39.5898315 iexplore.exe 1376 RegOpenKey HKCU\Software\Classes\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A}\0.8 NAME NOT FOUND Desired Access: Maximum Allowed
65998 08:31:39.5898498 iexplore.exe 1376 RegOpenKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A}\0.8 NAME NOT FOUND Desired Access: Maximum Allowed
65999 08:31:39.5898678 iexplore.exe 1376 RegQueryKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} SUCCESS Query: Name
66000 08:31:39.5898872 iexplore.exe 1376 RegOpenKey HKCU\Software\Classes\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} NAME NOT FOUND Desired Access: Maximum Allowed
66001 08:31:39.5899056 iexplore.exe 1376 RegEnumKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} SUCCESS Index: 0, Name: 1.0
66002 08:31:39.5899228 iexplore.exe 1376 RegEnumKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} NO MORE ENTRIES Index: 1, Length: 288
66003 08:31:39.5899411 iexplore.exe 1376 RegCloseKey HKCR\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} SUCCESS 

This just kept repeating.. A google on the 162009A GUID did bring up some results on troubleshooting SL installs, but didn't want to run off and start smashing the registry without knowing the full picture.

I will upload the PML file to my SkyDrive and PM the link to you shortly.

Thanks again for all your help, really appreciate it.

Kind Regards,

Rob
Blog: www.robzyc.spaces.live.com

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-24-2007 2:21 PM |

W00t!  I'm psyched that you got it working. 

Thank you for reporting this and gathering such useful data!

I'll open a bug for this and try to 1) get everything working in this scenario and 2) make sure the installer detects when we're in this state and gives a meaningful error message.

Thanks again,

Bridgette 

Re: Viewing Silverlight Apps on the Web behind Corporate Firewall

08-25-2007 7:48 AM |

Bridgette,

Excellent, glad we managed to get the issue resolved and at least have some indication of the cause!

Good (Bug) Hunting!

Regards,
Rob
Blog: www.robzyc.spaces.live.com