Outlook 365 Junk email filter broke

Question

I'm running Microsoft® Outlook® for Microsoft 365 MSO (Version 2206 Build 16.0.15330.20144) 32-bit with all the latest updates. Up until the most recent round of MS critical updates, the Blocked Senders feature in Outlook was working perfectly. My Blocked Sender list contains fewer than 50 entries...some of which block the high-level domain. Now, however, none of the listed blacked addresses are now being correctly handled...e.g., none go the "junk mail" folder. They just remain (annoyingly) in the "Inbox" until manually moved. them

I have tried the following:

1. Exported the list, deleted all the entries in the Properties Folder and then imported the list (no help)
2. Changed filtering levels from "No Auto Filtering" to; "Medium" to "High" (no help)
3. Done a complete (online) Repair of Office 365 (no help)
4. Made sure that none of the blocked addresses are contained in either my Contacts or in the Safe Senders List (no help)

Has anyone else been experiencing this issue and, if so, any suggestions on a fix?

Answer 1

Hi @ITEd-0945 ，

Welcome to our forum!
Given this case, it is recommended you create a new profile and re-add your account and see if the issue continues:
Go to Control Panel > Mail > Show Profiles > Add, then re-add your account.

If your issue continues, please provide more related information for better research:

• What type of account are you using?
• Does the issue also exist on the web?

  ---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 2

I have no idea what happened (i.e., certainly nothing that I tried worked), but the Outlook junk email filter is working once again!! Go figure!!

I never was able to add an additional email profile or remove an existing one. However, thank you FaeryFu-MSFT, for trying to help, but at this point, I'm willing to leave well enough alone and to consider this issue "closed".

Answer 3

Mystery solved: I believe that I've located the potential source of the original problem with the Outlook junk email filter not working. The problem seems to stem from a recent update to my ESET Security Suit that apparently activated the ESET SPAM filter add on to Outlook without me noticing it. As near as I can tell, the reason for the Outlook junk email filter beginning to work again was caused by me catching the change and deactivating the ESET add on.

I have since duplicated the problem by restoring the ESET Spam filter and found that, in short order, the Outlook junk email filter ceases to move incoming junk email to the junk mail folder. Turning the ESET Spam filter back off corrects the issue. I'll pass this info on to ESET.

Answer 4

And from ESET...

Hello,

Thank you for contacting ESET North American Customer Support,

We are aware of an issue with the ESET spam filter and Outlook plug in after our recent update. We do apologize for the inconvenience but we are working on a hot fix and will be releasing it soon. We do not currently have a date for the release of this resolution.

Thank you for using ESET security products,

ESET Technical Support

North America