SOLUTION TO INSTALL Coldfusion 8 Standard (32-bit) to Windows Server 2008 64-bit (SBS small business server 2008 x64) on IIS7

Spent a day researching online and finally made CF8 Standard work on IIS7 x64. Just want to share it.

SOLUTION TO INSTALL Coldfusion 8 Standard (32-bit) to Windows Server 2008 64-bit (SBS small business server 2008 x64) on IIS7


Example Website:
IIS > Sites > testwebsite
IIS Application Pool: (automatically named and created by IIS)


1. PROBLEM: HTTP Error 404.17

IIS > Application Pools > (right click on) testwebsite > Advanced Settings > Enable 32-Bit Applications > (set to) True

(no restart needed)


2. Then I hit a 2nd PROBLEM: browser shows:
“Service Unavailable HTTP Error 503. The service is unavailable”

Refer to:

I followed his steps and found out this error in windows Event Viewer > Windows Logs > Application > Error, Source=IIS-W3SVC-WP >

“The Module DLL C:\Windows\system32\RpcProxy\RpcProxy.dll failed to load. The data is the error.”


Edit file:

Change this line from:
<add name=”PasswordExpiryModule” image=”C:\Windows\system32\RpcProxy\RpcProxy.dll” />

<add name=”PasswordExpiryModule” image=”C:\Windows\system32\RpcProxy\RpcProxy.dll” preCondition=”bitness64″ />

May need to restart IIS.


3. Now the 3rd PROBLEM pops up: browser shows:
“HTTP Error 500.19 – Internal Server Error”

Refer to:
which refers to:

They said the http compression modules caused the error, and need to disable it globally. Run this command:
%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpCompression /-[name=’xpress’]

In case we want to re-enable it, run this:
%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpCompression /+[name=’xpress’,doStaticCompression=’false’,dll=’%windir%\system32\inetsrv\suscomp.dll’]

(note two %windir% to replace)

NOTE: this will turn off HTTP compression for all sites on IIS. I tried to turn compression ON again in IIS > (Top Level Domain, the 1st node below “Start Page” on left sidebar) > (dbl-click icon) Compression, by unchecking all boxes (if checked) > apply changes, then checking all boxes > apply changes. Restart IIS. Then both HTTP compression & coldfusion work at the same time! (to confirm: check HTTP header: Content-Encoding = gzip, using Firefox add-on: Live HTTP Headers)


Then it finally worked!!

1. Enable 32-Bit Applications in the IIS Application Pool
2. Edit applicationHost.config for RpcProxy.dll 64-bit setting
3. Disable HTTP compression scheme in IIS by command line
– than turn off then on Compression in IIS by GUI


never checked it

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