How to Fix Event ID 1104: The Security Log Is Now Full? - MiniTool

Effective way to resolve the Windows 10/11 security log full (event ID 1104)

Windows Event Viewer is a powerful troubleshooting tool that provides diagnostic data by tracking computer activity. However, when the security log reaches the upper limit, an error of "Security Log Full" appears and event ID 1104 is displayed. This usually results in only administrators being able to log in. This article will provide several solutions.

Method 1: Enable event overwrite

Allowing event viewer to overwrite old logs saves space and prevents logs from being full.

Step 1: Enter "Event Viewer" in the search bar and press Enter.

Step 2: Expand "Windows Logs" and select "Security".

Step 3: In the right pane, right-click Properties (under Actions).

Step 4: Check "Overwrite events as needed (oldest event priority)" and click "OK" to save the changes.

Method 2: Enable event viewer through the service

Service conflicts can cause the Event Viewer service to be disabled, resulting in the log full.

Step 1: Right-click the "Start" menu and select "Run".

Step 2: Enter "services.msc" and press Enter to open the service.

Step 3: Find "Windows Log", right-click and select "Restart".

Step 4: If the service is still not running, double-click it, set "Startup Type" to "Auto", and then click "Start".

Step 5: Click "Apply" and "OK" to save the changes.

Method 3: Uninstall the recently installed Windows updates

There may be compatibility issues with recent Windows updates. Uninstalling it may solve the problem.

Step 1: Press Win I to open Windows settings.

Step 2: Go to Update & Security > Windows Update > View Update History.

Step 3: Click "Uninstall Update", right-click the recently installed update and select "Uninstall".

Method 4: Run the system file checker

Corrupt system files may also cause event ID 1104 errors. The System File Checker can help repair corrupt or missing system files.

Step 1: Enter "cmd" in the search bar, find "Command Prompt", right-click and select "Run as administrator".

Step 2: Enter "sfc /scannow" in the command window and press Enter to start scanning.

Through the above steps, you should be able to resolve event ID 1104 error on Windows 10/11 and restore normal operation of security logs.

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