Noticed an issue internally with a legacy farm we have still in place – its also still using legacy Web interface boxes (5.4) as their front end.
Was getting error :
The Web site is experiencing technical difficulties. We apologize for any inconvenience.
Nothing showed up anywhere, event viewer etc.
Bit baffled and knew needed to get some details of what was going on. To do needed to get more info from IIS. In order to open up more logging did the following:
i) Edited the web.config file for the site we used (under c:\inetpub\wwwroot\Citrix\sitename)
ii) Edited the line
<customErrors mode=”On” defaultRedirect=”~/html/serverError.html”>
and changed it to
<customErrors mode=”Off” defaultRedirect=”~/html/serverError.html”>
iii) Save file
iv) do a IISRESET for the changes to take effect.
After that when i launched the site it gave permission error messages. Of course errors might be different depending on the scenario but instructive to know how to open up the IIS logging. Worth resetting back too once your finished