HTTP Error 500.19 on SBS 2008

Today I was investigating problems with a friends SBS 2008 server.  It suddenly had decided to give a HTTP Error 500.19 – Internal Server Error to every single website on it including Remote Web Workplace, OWA and even Sharepoint was dead.  Given that all these apps were dead, I even tried to access the iisstart.htm page that is installed by default on the default website – not even that worked as you can see in the screenshot below.  Something was really broken on this server.


After asking all my SBS MVP buddies and not getting a solution, I turned to the place of all knowledge… the SBS CSS team in Las Colinas, Texas.  Damian from the team responded quickly and suggested “either the Application pools set to 32-bit True or missing suscomp.dll from \windows\system32\inetsrv”.

I checked the SBS Application Pool under IIS Manager and the “Enable 32-bit applications” was set to False – that meant that these app pools were “normal”



I next checked out the \windows\system32\inetsrv folder and sure enough suscomp.dll was missing.  I then copied it from another SBS 2008 server and did an IISRESET to restart IIS and everything works once more.  Thanks Damian!

Now the quandry… what has happened on this server so that the suscomp.dll is missing… that’s the next thing I need to figure out.

UPDATE Dec 9th – I found the source of the problem – documented here

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This entry was posted on Wednesday, December 8th, 2010 at 6:25 am and is filed under Blog. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

29 Responses to “HTTP Error 500.19 on SBS 2008”

  1. Adam Ferris Says:

    December 8th, 2010 at 7:11 am

    Hi mate, I’ve found update have been the cause to this in the past.
    I’m not 100% sure which ones yet but it can be very painful are you http > https redirects still working?
    I’ve found say fails to redirect to https:// once this issue happens

    Kind regards ,

  2. Wayne Small Says:

    December 8th, 2010 at 7:14 am

    Thanks Adam – I’ll check it out more.. I have suspicion that WSUS was removed and that has removed the suscomp.dll. More soon.

  3. Cleaning up WSUS Failed Upgrade on SBS 2008 Says:

    December 9th, 2010 at 6:01 am

    […] If you are new here, you might want to subscribe to the RSS feed for updates on this topic.My post yesterday was about an issue a friend had with their SBS 2008 server.  Basically I was unsure as to how […]

  4. Adam Ferris Says:

    December 9th, 2010 at 10:03 am

    Hi Wayne,
    to be honest i was also working from my phone at the time, but WSUS was the cause for mine. The company i work for has around 20 SBS08 servers out there atm. When ever i see WSUS 3.0 in the updates i decline it. for the exact reason above.
    Glad it all worked out for you

  5. Wayne Small Says:

    December 9th, 2010 at 10:15 am

    Thanks Adam – appreciate the feedback.

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