Windows 11 Defender Exclusion Does Not Save: Fix

You add a file, folder, or process to the Microsoft Defender Antivirus exclusion list in Windows 11. You click OK, reopen the settings, and the entry is gone. This problem prevents critical applications, development tools, or network shares from running without interference from real-time scanning. The root cause is often a corrupted policy setting, a … Read more

Windows 11 Controlled Folder Access Blocks Trusted App: Fix

You are trying to save a file or let an app write to a protected folder, but Windows 11 blocks the action with a notification from Controlled Folder Access. This feature in Microsoft Defender Antivirus monitors specific folders and prevents untrusted applications from modifying files in them. The problem occurs when the app you trust … Read more

Windows 11 Defender SmartScreen Blocks Internal App: Fix

Your company’s internal application is suddenly blocked by Windows Defender SmartScreen, displaying a warning that the app is unrecognized or might be unsafe. This occurs because SmartScreen compares downloaded files against a cloud-based reputation database, and internal apps signed with a self-signed or non-public certificate often lack sufficient reputation. This article explains why SmartScreen blocks … Read more

Windows 11 BitLocker Recovery Prompts After BIOS Update: Fix

After updating your BIOS or UEFI firmware, Windows 11 may suddenly display a blue BitLocker recovery screen asking for a 48-digit recovery key. This happens because BitLocker detects a change in the system’s trusted boot components and locks the drive to protect your data. The prompt is not a sign of data corruption or a … Read more

Fix Smart App Control Switching to Evaluation Mode Permanently on Windows 11

Smart App Control is a security feature in Windows 11 that blocks untrusted or malicious apps. Some users find that the feature switches to Evaluation mode permanently and will not turn on. This happens when the feature cannot make a confident decision about your app usage history. This article explains why Smart App Control gets … Read more

How to Exempt a Known Tool From Reputation-Based Protection on Windows 11

Windows 11 includes Microsoft Defender SmartScreen, a security feature that checks files and apps against a reputation database. When you run a tool that SmartScreen has not seen before, it may block execution or display a warning. This happens even if the tool is safe and comes from a trusted source. The feature uses cloud-based … Read more