Today I tried to make the Permalinks of my WordPress site more SEO friendly. I got it working for all links, except the ones linking to a custom post type page. I Googled the problem and found out that it's a common, in my eyes not-so-easy-to-solve-type problem. That's why I wanted to use the default permalink structure again (I am still in development phase).
Now nearly all links are broken! Sometimes I get a 404, sometimes the browser itself says "page not found" - on some links, the default structure is still working. When I manually try to get to a page by entering the id manually in the brower's address bar, the address changes to the new structure, but I get a 404. You see, something is all wrong there and I don't really know how to fix it. I read about editing the .htaccess or httpd.conf (I'm in XAMPP) file, but because I don't know anything about this, I don't really want to change anything in there.
Is there any way of "resetting" all permalinks to their default format?