asp.net +IIS throws 500 errors on Images

500 errors caused by images hosted in ASP.NET+ IIS

[mukmac]

I keep getting server errors in IIS for an image that is part of a JavaScript mouse hover tooltip.
This is the excerpt from the IIS log showing the 500 error generated.

D:\Logs\W3SVC1618632613\ex081211.log 159443 2008-12-11 22:58:57 170.168.54.238 - W3SVC1618632613 192.22.22.222 80 GET /images/tip.gif - 500 0 64 0 472 0 HTTP/1.1 [mysamplesite.com...] Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.1;+SV1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727) - [mysamplesite.com...] - - - - - - - -

It's weird that a JavaScript throwing a server side error and it seems like this happens only when the client browser is Firefox.
The page loads without any issues, but a 500 log is reported in IIS log.
Any help would be deeply appreciated.

[carguy84]

What mouse hover tooltip are you refering to, and what is the javascript call?

[mukmac]

It's a simple javascript code which will show a div on mousehover of a hyperlink. This div has a baloon like background image and this background image is recorded in the IIS log.

[mrMister]

I would increase your logging parameters in IIS to show the actual error message, not just the error code.

[mukmac]

Can you please be more specific on how to increase logging parameters to show the actual error.

[carguy84]

I don't think IIS logging will show you the actual error message, however in Windows Event Viewer -> Applications, it should have all the details.