Suddenly, my printer says username and password are not correct

[Bubbles022]

I have not made any changes to my printer and all of a sudden it says email and password are not correct. So I’m unable to scan to email.

[BeemerBiker]

ISPs frequently change protocol and requirements.  You may need an app password instead of an account password.

for g.mail

The printer cannot use the account password. A special "application" password is required as discussed here.

same for yahoo and many other ISPs

[Bubbles022]

S0 how do I fix it?

[Bubbles022]

So how do I fix it.  I am using a Mac  with the latest software

[BeemerBiker]

You will have to lookup you mail provider and ask for how to get the application password

g.mail

y,ahoo.mail

depends on your country's policy, the ISP and the email provider

a g.mail example was provided earlier

could also be a problem if you are using VPN and your country is blocking  it.  It could also be encryption level was changed and the printer email app needs to be notified to use a different encryption (port number)  Contact your mail provider.