In my old MVC 4 website, I've used all type of letters (also non hex) in the "machineKey validationKey" in web.config - it worked fine.
But now I've upgraded the website to MVC 5 and it now fails with "invalid non hex values".
Can I tell MVC 5 to use all type of chars?
Why didn't my old site fail?
If I generate a new machineKey validationKey with hex values, I guess that all passwords will be invalid.
Any idea what to do?