Windows Defender, "Items Skipped During Scan"

As a side note, if you don't believe your core issue has been answered, you shouldn't mark anyone's post as such even if it's been helpful.  Otherwise, most will consider the issue resolved.

Instead, select the "No" option or simply leave it unselected.

Rob

I feel it is definitely a bug since some of us are experiencing this. I quit jumping thru the hoops suggested by some of the "experts" some time ago with other issues and they mysteriously disappeared with later updates. Im hoping that is the case here as well.  I'm glad to have these forums as they enable us to see that others are similarly affected.

The fact that most indicating they have this problem don't appear to have an exclusion, along with the nearly certain relationship to the monthly cumulative update, makes me think the cause is something else.

The description for this notification is found in the following document.

Hide notifications from the Windows Security app - Windows security | Microsoft Docs

Since the exclusion doesn't appear to be the issue, what about the other option of a network scanning setting?  In the search for that notification, this earlier thread appeared to have had similar issues due to a possible earlier infection that created an .ISO file mounted as partition G:\

Defender skips scanning an element because of exclusion or network settings - Virus, Trojan, Spyware, and Malware Removal Help

Now I'm not saying this might have been caused by similar past malware, but it does bring to question whether those affected might have additional drives or partitions defined, especially network drives such as a NAS, server or even an ISO file as did the person in that thread?

So rather than beating a dead horse and waiting for Microsoft to respond, which by its very nature won't occur until their developers are certain they've fully explored the potential reasons for the problem and likely delivered the solution as well, you may want to explore the other potential causes as well.

Rob

You know, it would be nice if Microsoft would either confirm or deny whether there is a bug, because surely, in their infinite wisdom, they would know by now.  Their handling of these kinds of things just seems to underscore the problems associated with a successful corporation getting too big with too much power and emphasizes the importance of strong federal antitrust legislation.