Hi, 

I am on DNN version 06.02.03 running on Windows Server 2008 R2 with IIS7. I am having an issue where I cannot load .aspx pages from within my site. I have been using the extension URL Adapter from DNN Sharp to adjust URLs to make them more SEO friendly. We are experiencing an issue which started suddenly today where I am unable to access URLs from our site which end in .aspx. We are able to, without issue, access URLs which have been adjusted with the URL Adapter extension, however, any that have not been modified with the extension we receive a 404 error. In the event log, I receive an error stating: 'Forms authentication failed for the request. Reason: The ticket supplied has expired.'. Any assistance that could be given would be greatly appreciated!

That was the issue. I was trying to access DNN generated URLs that have worked perfectly for a year, up until now. I ended up doing a restore of the DNN database from a backup made a couple of days ago, and the issue seems to be resolved at this point. Thanks for your help.