You must enter valid credentials to access this resource

[it_smy]

Pls.  how to Solve Err. You must enter valid credentials to access this resource pfsense

[it_smy]

Pls.  how to Solve Err. You must enter valid credentials to access this resource pfsense

[jimp]

Without knowing what packages you have installed, it's impossible to help.

That string doesn't show up anywhere in our current code/releases, but it does show in a couple of packages (authng and spamd).

If you're seeing it, the most likely explanation is that you're not entering the right password, or at least not the password it expects.