Server is IIS 7.5 on Windows Server 2008 R2. Clients are on a company LAN (all intranet). Authentication is performed via Windows Authentication / Kerberos.
When accessing content on an ASP.NET application hosted on this server, the following occurs. Some of this is based on Fiddler traffic inspection.
- Random requests will instantly (less than a second) return 504 Gateway Timeout
- Random static content will not be served and instead return 504 Gateway Timeout (also instantly)
- Some pages will load dynamic content (database filled fields) and some static content, but most of the static content is failed to load (css, images, javascript)
- For the content that is loaded, IIS logs and application traces show 200 OK
- For the content that is not loaded, no entries show in IIS logs or traces at all
And it gets weirder. Tests in Chrome and Internet Explorer both observe the above behavior, but Firefox is unaffected and works 100%. I repeat, all requests in Firefox succeed, but do not in Chrome and IE.
Honestly, I don't even know where to go from here. Anyone have advice on where I could look for more information? Logs? Traces? Tests?