I have spent an AGE troubleshooting this so I'd really appreciate any pointers.

I am seeing unexplained 404's in my log file and I just can't figure this out. To illustrate this, here are two entries from my log file. This is from a test page I set up in DNN.

2012-11-04 17:13:25 173.1.41.211 GET /vendortest TopicID=catering&LocationID=Montana-Caterers 80 host 24.17.108.181 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) 404 0 2 109

2012-11-04 17:17:51 173.1.41.211 GET /vendortest TopicID=catering&LocationID=Montana-Caterers 80 host 24.17.108.181 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) 200 0 0 640

As far as I can tell, these are identical calls - yet the first one fails and the second one works. I see this a lot on this particular page (regardless of the parameters I pass). Sometimes it works but then it just throws 404 errors for no obvious reason.

I am not convinced that this is a factor but this on a CE 6.2.4 server. I don't see this on a CE 6.0.1 server.

I'm really struggling to troubleshoot this and would appreciate any pointers.

Thanks.

Mark