Create a new portal with one blank page in DNN 8. Add a page and try to add the module Outlook Sync 45.06.07 to the page. A 404 error is displayed. Now, any other pages in the site you might have made, or the Admin pages, are all 404.

Strange: Go to the Home page then change the web.config so that the DNNFriendlyUrl provider uses urlFormat="humanfriendly" instead of urlFormat="advanced", refresh the Home page (it will now use .aspx) and the site works fine. You can now add the Outlook Sync module. But change the web.config back again to urlFormat="advanced" and every page except the Home  page gives a 404 error, including the Admin pages.

This also happened with Outlook Sync 45.06.05 on DNN 8 and I thought 45.06.07 would fix it, but it doesn't

I've looked all through the menu items on your site, but cannot find the 'submit support ticket' page. Can you please direct me?
Thanks.