We have WSS 3.0 running on Windows 2003 Server with Forms-Based Authentication. It has been running for months but now if I try selecting ‘Register’ or ‘Forgot password’ I now get a ‘File not found’ error.
I believe that it is related to the .NET 3.5 Family service pack as I’ve been able to ‘break’ and old image of the server pre-patching of the .NET 3.5 service pack to get the same result.
I HAVE tried rolling back the service pack for .NET but it does not resolve the problem. Taking off too many service packs related to .NET breaks the website completely and putting them back on again does not recover it either.