Māris Krivtežs

I meant Episerver logs. As you have an error, there should be something logged.

Also, which version of Episerver and 404 handler do you use? And how redirects look like (old URL, new URL, "wildcard")?

Is this still an issue in the latest version? https://nuget.episerver.com/package/?id=Geta.404Handler

@KidMojo What version of 404 handler are you using?

Why do you need a 404 handler to handle static files? The 404 handler was not intended for the page's static file redirects. You should use the correct URL on...

It is quite hard to understand what is happening from your description. Version 11.3 is already using SQL Server as storage and has no limitation on how many redirects are...

What is the use case for the query strings? Why do you need those? Do you have some logged information about the error?