If the Outlook spam filter not working, there are a few things you can try:

Check your spam filter settings: Make sure that your spam filter is turned on and that the settings are configured to your liking. You can access your spam filter settings by going to File > Options > Mail > Junk Email.

Update your Outlook: Make sure that you have the latest version of Outlook and that all of your software is up to date.

Check your blocked senders list: If you have blocked a sender in the past, their messages will not be marked as spam. Make sure that your blocked senders list is up to date and does not include any senders that you actually want to receive emails from.

Check your safe senders list: If you have added a sender to your safe senders list, their messages will not be marked as spam. Make sure that your safe senders list is up to date and does not include any senders that you do not want to receive emails from.

Check your rules: If you have set up custom rules in Outlook, they may be affecting how your spam filter works. Make sure that your rules are set up correctly and that they are not conflicting with your spam filter.

Check third-party software: If you have any third-party spam filtering software installed, it may be conflicting with Outlook's built-in spam filter. You can try disabling the third-party software to see if it resolves the problem.

Check your email account: If you are still receiving spam messages, it may be due to a compromised email account. You should change your email account password and enable two-factor authentication if available.

If none of the above steps resolve the issue, you can try creating a new Outlook profile and see if that resolves the issue. If the issue persists after trying all these steps, you may want to contact our technician support for further assistance.