All the files and folders that are described in this article are protected by default permissions to allow only SYSTEM and administrator access, and they contain only operating system components. This article provides both file names and folders that can be excluded. Microsoft has no control over other files that might use the same extensions as the files that are described in this article. For example, do not exclude all files that have a. When you scan these files, performance and operating system reliability problems might occur because of file locking.ĭo not exclude any one of these files based on the file name extension. Your system will be safer if you do not exclude any files or folders from scans. We are aware of the risk of excluding the specific files or folders that are mentioned in this article from scans that are made by your antivirus software. We recommend that you apply these settings temporarily to evaluate system behavior. This workaround might make a computer or a network more vulnerable to attack by malicious users or by malicious software such as viruses. However, we are providing this information so that you can implement this workaround at your own discretion. If you implement this workaround, take any appropriate additional steps to help protect the computer. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this workaround in your particular environment. You can make these changes to understand the nature of a specific problem. Important This article contains information that shows how to help lower security settings or how to temporarily turn off security features on a computer. Work with your third-party antivirus vendor to further troubleshoot. You might have to have the following kind of advanced data available to help narrow down the problem:Ĭapture process logs using Process MonitorĬapture performance logs using Windows Performance RecorderĪdvanced troubleshooting for Windows-based computer freeze issues How to temporarily deactivate the kernel mode filter driver in Windows Update the version of the third-party antivirus program. Or, for testing, see Increased resource use (for example, high CPU use (user mode or kernel mode) or high memory use (user mode or kernel mode) Verify that you didn’t set a specific functionality in a hardened or aggressive mode that causes more of the following symptoms: If the issue persists, please submit a false positive (fp) to the third-party antivirus vendor support. Update the definitions for your third-party antivirus program. System stops responding, slow file server performance, or delays occur when you work with files that are located on a file serverīefore you add antivirus exclusions, follow these steps: You might experience various issues when you work with files over the network on a Windows Server 2003-based or Windows 2000 Server-based computer System stops responding (you have to force a restart to recover)įor more information, see the following articles: Windows Explorer temporary lack of response Your Windows-based or Windows Server-based computer experiences the following issues:įile copy when you use a console app (for example, cmd.exe)Īccessing a network share or a mapped drive Manage exclusions for Microsoft Defender for Endpoint and Microsoft Defender AntivirusĬonfigure Microsoft Defender Antivirus exclusions on Windows Server For more information, see the following articles: If you are using Microsoft Defender Antivirus, some or all of the suggested exclusions that are mentioned in this article might be built-in or provided by automatic exclusions. The local system is used together with antivirus software in an Active Directory domain environment or in a managed business environment. The issue occurs on a computer that is running a version of Windows or Windows Server that is listed in the “Applies to” section. This article contains recommendations to help an administrator determine the cause of potential instability in the following scenario:
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