Board Thread:General Discussion/@comment-46183073-20200717061842/@comment-9605025-20200721032718

There are two cases where a redirect won't work. First is when it redirects the user to another redirect. This is known as a double redirect and you can find a list of them at the page Fandyllic mentioned. The other way a redirect will fail is if the page it redirects to doesn't exist. In that case, you can check Special:BrokenRedirects on your wiki.