In the Details pane, choose the ellipsis Need help with suppression rules? See Suppress an alert and create a new suppression rule. Remediation actions , such as sending a file to quarantine or stopping a process, are taken on entities such as files that are detected as threats. Several types of remediation actions occur automatically through automated investigation and Microsoft Defender Antivirus:.
Other actions, such as starting an antivirus scan or collecting an investigation package, occur manually or through Live Response. Actions taken through Live Response cannot be undone. After you have reviewed your alerts, your next step is to review remediation actions. If any actions were taken as a result of false positives, you can undo most kinds of remediation actions. Specifically, you can:. When you're done reviewing and undoing actions that were taken as a result of false positives, proceed to review or define exclusions.
In the left navigation pane of the Microsoft Defender portal , click Action center. In the left navigation pane of the Microsoft Defender portal, click Action center. In the flyout pane, select Undo. If the action cannot be undone with this method, you will not see an Undo button. To learn more, see Undo completed actions. On the History tab, select a file that has the Action type Quarantine file.
In the pane on the right side of the screen, select Apply to X more instances of this file , and then select Undo. You can roll back and remove a file from quarantine if you've determined that it's clean after an investigation. Run the following command on each device where the file was quarantined. Defender for Endpoint will restore all custom blocked files that were quarantined on this device in the last 30 days. A file that was quarantined as a potential network threat might not be recoverable.
If a user attempts to restore the file after quarantine, that file might not be accessible. This can be due to the system no longer having network credentials to access the file. Typically, this is a result of a temporary log on to a system or shared folder and the access tokens expired. An exclusion is an entity, such as a file or URL, that you specify as an exception to remediation actions. The excluded entity can still get detected, but no remediation actions are taken on that entity.
That is, the detected file or process won't be stopped, sent to quarantine, removed, or otherwise changed by Microsoft Defender for Endpoint. Microsoft Defender Antivirus exclusions apply only to antivirus protection, not across other Microsoft Defender for Endpoint capabilities.
To exclude files broadly, use exclusions for Microsoft Defender Antivirus and custom indicators for Microsoft Defender for Endpoint. In general, you should not need to define exclusions for Microsoft Defender Antivirus. Make sure that you define exclusions sparingly, and that you only include the files, folders, processes, and process-opened files that are resulting in false positives.
In addition, make sure to review your defined exclusions regularly. We recommend using Microsoft Endpoint Manager to define or edit your antivirus exclusions; however, you can use other methods, such as Group Policy see Manage Microsoft Defender for Endpoint. Need help with antivirus exclusions? See Configure and validate exclusions for Microsoft Defender Antivirus scans.
If you don't have an existing policy, or you want to create a new policy, skip to the next procedure. Choose Properties , and next to Configuration settings , choose Edit.
Expand Microsoft Defender Antivirus Exclusions and then specify your exclusions. On the Configuration settings tab, specify your antivirus exclusions, and then choose Next. On the Scope tags tab, if you are using scope tags in your organization, specify scope tags for the policy you are creating.
See Scope tags. NEVER open email attachments unless you can verify the sender and you trust them. NEVER click on the links in spam email. NEVER rely on the contact details provided in a pop-up message. Instead, find your anti-virus vendor's contact details through an internet search. Avoid questionable websites. Some sites may automatically download malicious software on to your computer.
Read more. Related news Scams Awareness Week Missed delivery, call or voicemail Flubot scams. Report abuse. Details required :. Cancel Submit. Marcelo de C. Gomes Independent Advisor. Hello how are you? Welcome to the Microsoft Community! My name is Marcelo C. This does not actually mean that you are running the antivirus in question, but rather an advertisement that, in my view, is in bad taste.
To solve this problem you have to remove the notification permissions from the website that is sending this advertisement to you through the browser. Trying to get a second opinion, they upload the file to VirusTotal and they get a report with detections by only a handful of antivirus engines.
Are those detections false positives? Or is the malware sample new and therefore detected only by a small number of antivirus products? For example, some antivirus products share the same detection engine or malware signatures.
0コメント