IIS Enable 32 bit applications "HTTP Error 500.19 - Internal Server Error"

http://forums.iis.net/t/1149768.aspx

"You cannot get rid of it for that site - compression schemes are registered globally - to get rid of the scheme altogether, run below
%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpCompression /-[name='xpress']"

RE: Quickbooks QBFC 80040154 "Co-Create error"?

Previously I had problems getting a desktop application to integrate with QuickBooks on a 64 bit Windows Server 2008 operating system running IIS 7.0.  Recently I've moved my development Website to the same 64 bit machine, and I was experience same problems with getting my .Net website to be able to use the QuickBooks QBFC8 Library.  Thanks to some experience from before I knew I should see if this was a problem going from 32 Bit to 64 Bit.  It was.  I had to "Enable 32-bit Applications" in the Advanced Settings on the Application Pool.