![]() ![]() This article includes the following sections: SectionĪutomatic exclusions on Windows Server 2016 or laterĭescribes the two main types of automatic exclusions and includes a detailed list of automatic exclusions You can also opt out of automatic exclusions if necessary. However, you can define custom exclusions. This article provides an overview of exclusions for Microsoft Defender Antivirus on Windows Server 2016 or later.īecause Microsoft Defender Antivirus is built into Windows Server 2016 and later, exclusions for operating system files and server roles happen automatically. To learn more, see Onboard Windows servers to the Microsoft Defender for Endpoint service. However, exclusions for server roles (as specified below) don't apply automatically, and you should configure these exclusions as appropriate. When you onboard those servers to Defender for Endpoint, you'll install Microsoft Defender Antivirus, and default exclusions for operating system files are applied. ![]() Windows Server 2012 R2 doesn't have Microsoft Defender Antivirus as an installable feature.Appropriate exclusions must be set for software that isn't included with the operating system.Microsoft Defender Antivirus uses the Deployment Image Servicing and Management (DISM) tools to determine which roles are installed on your computer.Custom and duplicate exclusions don't conflict with automatic exclusions.Automatic exclusions aren't honored during a quick scan, full scan, and custom scan.Automatic exclusions only apply to real-time protection (RTP) scanning.Custom exclusions take precedence over automatic exclusions.Configure and validate exclusions for files opened by processes.Configure and validate exclusions based on file name, extension, and folder location.In addition to server role-defined automatic exclusions, you can add or remove custom exclusions. These exclusions don't appear in the standard exclusion lists that are shown in the Windows Security app. I'm going to keep an eye on the specifics you mention to see if we still have an issue.Microsoft Defender Antivirus on Windows Server 2016 and Windows Server 2019 automatically enrolls you in certain exclusions, as defined by your specified server role. The tblf_firewallagregated_event table was definitely the culprit. I got the server operational again, and cleanup jobs that were indeed failing are now working again and I have 58% free space in the database. In case table taking most of the space is tblf_firewallagregated_event, could you also verify that oldest entry as stored in column "Occurred" is not older than ~1 month? Asking, because in case there is huge amount of entries in mentioned table, it might have resulted in daily cleanups to fail and thus not cleaning older entries.Īlso in case there are many such event reported in a minute, are they all from different devices? Or clients are sending multiple identical events in a minute? If so, we might have to check whether event aggregation works correctly. ![]() Could you please access database via SQL Server Management Studio and provide us basic sizing statistics (number of entries, overall size of table) for problematic DB tables (there are standard reports available for this). ![]()
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