IIS Server, sudden 404.4 on all sites The resource you are looking for does not have a handler associated with it

Question

I have a long standing IIS 7.5 box that suddenly stopped working mid morning today. Something has obviously changed but I have been unable to determine what and would appreciate any suggestion.

All of the sites on the IIS server have started returning the same error page when viewed locally - HTTP Error 404.4 - Not Found The resource you are looking for does not have a handler associated with it.

The server has a number of web sites on it, mostly asp.net but there are some others.

Things I have tried (in no particular order) -

Restarting the IIS Server
Restarting the Windows Server
Setting up a plain static html website
Comparing applicationhost.config with the versions in the history folder
Checking the handlers appear to be configured correctly (they do as fas as I can see).
Added FX_schema.patch.xml as per Unrecognized element 'ProviderOption' when trying to use Powershell Set-WebConfigurationProperty
Checked the server logs but can't see anything around the time this started.

I'm at a loss now for ideas so would appreciate any suggestions.

score 1 · Answer 1 · answered Aug 17 '20 at 16:23

1

I've found the source of this. A global rewrite rule had been setup that was redirecting everything.Disabling this meant all the sites were working again.

All I need to do now is figure out who made the change and have a quiet word with them!

answered Aug 17 '20 at 16:23

Steve

11
3

It is always hard to track down such changes, https://blogs.iis.net/webtopics/iis-7-5-how-to-enable-iis-configuration-auditing So a better idea is to log who logged on to that server and confront that guy. – Lex Li Aug 17 '20 at 18:22
If only I'd know about that before, thanks for the link – Steve Aug 18 '20 at 08:49

IIS Server, sudden 404.4 on all sites The resource you are looking for does not have a handler associated with it

1 Answers1