Yahoo Mail keeps logging me out and won't sync emails

Has anyone else encountered a Yahoo Email Not Working Issue where the account repeatedly logs out and stops syncing new messages? Over the past week, I've had to sign in multiple times a day, and even after logging in successfully, my inbox doesn't update properly.

At first, I assumed my password had been compromised, but account security checks showed everything was normal. Then I checked my browser settings and noticed that cookies were being cleared automatically every time I closed the browser. Once I adjusted those settings, the login issue improved. However, I still experienced occasional delays in receiving emails, which made me realize there might be additional synchronization problems.

While investigating the issue, I decided to create a complete mailbox backup using the DRS Softech Yahoo Email Backup Tool. It gave me peace of mind knowing that all my emails were safely stored elsewhere in case the account became inaccessible. The backup process was straightforward and worked without any complications.

For anyone experiencing Yahoo Mail not working, especially login loops or synchronization failures, check your browser cookie settings, verify account security options, and test the account on another device. These steps helped narrow down the cause in my case.

Has anyone found a permanent solution for Yahoo Mail sync issues, or is this something Yahoo needs to fix on their end?