MalwareDefender why doesn't my rule work?

I wrote the rule shown below, but MalwareDefender (MD) still allows me to write to the HOSTS file. Why? Is there a rule that WILL prevent writing to HOSTS?
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There should already be a rule for this in the System Configuaration Files tree. Where have you placed this new rule?

 

@Scoobs72 -- I didn't assign my rule to any group. It stands alone.

There IS a rule for system32/drivers/etc in the SystemConfig group -- set for Read-permit and Write-ask. I did not modify that rule in any way. Even so, I can freely write to HOSTS file and MD does NOT ask.

@Pete -- I did as you said. MD still allows writing to hosts with no objection. By the way, I test-write to hosts by right clicking the hosts file and doing a "send to" to notepad. I then modify hosts with notepad & save the file. MD offers no pop-ups whatsoever. Also, I verify that the change was, in fact, saved.
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You should get a prompt as the built-in file rule covers this.

Are there any file rules for notpade.exe which could allow the modification of the hosts file or is notepad.exe in a group, where the group rules allow this file modification?

Cheers

 

Where is the the rule located? You may have another, lower level rule, superseding yours.

 

Yes, THAT was the problem. The rule works now. Thanks to all who offered clues, but especially to subset.

NOTE TO XIAOLIN (Requested change) -- It would be helpful if you added a menu item to search for rules that conflict with one another.

 

Thanks for the suggestion.

 

@xiaolin -- Thanks for visiting this thread!

@ Pete -- Good suggestion! I checked other stuff. To wit, I did a "rule find" on "system32\drivers\etc" & examined every rule wherein that file was affected. There were two other apps, including explorer.exe, that had the okay to mess with HOSTS. I fixed them both.