Error meaage reads:
Module: DynamicCompressionModule or StaticCompressionModule
Notification: SendResponse
Handler: StaticFile
Error Code: 0x8007007e
This issue occurs when you have WSUS installed on a server with a webiste. It’s caused by conflicting modules from the top level server node and the web site node in IIS. Here is how to fix it.
1. Run CMD as administrator: and run
%windir%system32inetsrvappcmd.exe add backup “My Backup Name”
This will backup your IIS config,
2. Removing DynamicCompressionModule and StaticCompressionModule from IIS:
a. In IIS manager, click on the Server node for the IIS server.
b. Double click on the Modules icon
c. Find DynamicCompressionModule and click “Unlock”
d. Find StaticCompressionModule and click “Unlock”
e. Now click on you’re website node, and open the Modules config.
f. Select DynamicCompressionModule and then click “Remove”
g. Select StaticCompressionModule and click “Remove”
3. Restart IIS