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Quickly helping one of colleague where after restoring applicationhost.config from the back up on win2k8 IIS 7 we started receiving 503 Service Unavailable on the browser.
As the very first step was to check event viewer where we had the following logged:
Log Name: Application
Source: Microsoft-Windows-IIS-W3SVC-WP
Date: 7/28/2009 12:46:10 AM
Event ID: 2280
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <computer_name>
Description:
The Module DLL C:\Windows\System32\inetsrv\compdyn.dll failed to load. The data is the error.
compdyn.dll ==> Dynamic Compression
Checking the inetsrv folder we were not able to locate this dll.That’s interesting.
Option provided was to :
1) Either to turn off the dynamic compression in applicationhost.config
- appcmd.exe set config "Default Web Site" -section:system.webServer/urlCompression /doDynamicCompression:"False"
2) Or to install the dynamic compression modules from Add Role Services Wizard, select Dynamic Content Compression
Till then bye bye …
- Anonymous
February 29, 2012
Thanks a lot man I was struglling with this issue for the last three days finally it is working after i installed all the required service rolls also the one you mentioned Dynamic Content Compression. And let me point it out here that I was doing this for the shared configuration.