Hi there, 2serveitsafely.
Thank you for reaching out to the Community. I'd be glad to assist you with your webmail password in QuickBooks Desktop.
Yes, you can reset your password directly through your email provider's website. Before doing so, we can perform some basic troubleshooting to fix the issue.
Let's check if your email provider is blocking sign-in attempts for your account through a third party program. If you use two-step verification, it's also possible it'll interrupt the connection.
For the detailed steps on how to fix the issue, I'm adding the article I recommend below:
QuickBooks will not accept my web mail password.
Please feel free to follow up with me here if you need additional assistance regarding your webmail access. I value your time and service.