Yahoo Mail login problems can sometimes be linked to browser compatibility issues. When using an outdated or unsupported browser, certain features of Yahoo Mail may not function correctly, leading to login difficulties. To ensure smooth access, users should use the latest version of popular browsers like Google Chrome, Mozilla Firefox, or Microsoft Edge. Clearing browser cache and cookies can also help resolve compatibility glitches. Additionally, disabling browser extensions or add-ons that might interfere with Yahoo Mail can be beneficial.