How to fix The security log is now full (Event ID 1104) in Windows?

Issue: Hello, I have a problem I hope you can help me with. I am using Windows 11, and I received The security log is now full of errors marked as Event ID 1104 in the Event Log. Is there a way to resolve this? Thanks in advance.

Solved Answer

Windows Event Viewer is an invaluable tool that runs each time you turn on your computer, keeping track of important system information such as application and system logs. It allows you to easily keep tabs on the current status of both hardware and software components in real time.

Event Viewer provides system administrators with a wealth of data to troubleshoot any machine malfunctions and keep track of activity for better management. By taking advantage of the logs, IT pros can easily recognize what is going on within their networks. Even regular users can make use of the Log whenever needed and see what is going on with Windows in detail.

Errors in the Event Log are not uncommon, and it is rather normal – there's no need to look them up or try fixing them if there are no malfunctions with your device. However, some events might be troublesome, and Event ID 1104 – The security log is now full – is one of them.

Event ID 1104 represents an issue where the upper limit of the Security Event Log file size is reached, and no more events can be logged. This usually happens whenever log overwriting is not allowed, so allowing it would fix the problem for most users. However, some Windows 11 users claimed that even with overwriting enabled, they still received The security log is now full Event ID 1104 errors in the Event Log.

Below we show how to enable log overwriting, as well as other solutions that could help you solve this issue. For optimization and remediation purposes, we recommend scanning the system with FortectMac Washing Machine X9 PC repair tool.

How to fix The security log is now full (Event ID 1104) in Windows?

Solution 1. Enable Event overwriting

Overwriting older logs should prevent them from getting full. Proceed with the following:

  • Open Event Viewer.
  • Go to Windows Logs and select Security.
  • Check the very right side of the window and click Properties.
  • At the bottom, you should see the When maximum event log size is reached section and a few choices there – pick the Overwrite events as needed (oldest events first) option.
  • Click Apply and then OK.

Enable overwriting

Solution 2. Try restarting the relevant service

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If the previous solution did not work for you, try this one instead – restarting the Event Viewer service as follows:

  • Press Win + R on your keyboard.
  • Type in services.msc and press Enter or click OK.
  • In the Services window, scroll down to find Windows Update Log.
  • Right-click the service and select Restart.
  • Alternatively, if this service is not running, follow these steps:
  • Double-click the Windows Update Log entry.
  • Under Startup type, select Automatic from the drop-down menu.
  • Click Start, Apply, and OK.

Restart Event Log service

After this, open Event Viewer again and make sure that log overwriting is still enabled.

Solution 3. Uninstall the most recent Windows update [workaround]

Many users reported that they started to get The security log is now full (Event ID 1104) errors after updating Windows to the latest version. If this happened recently, you could uninstall the faulty update and wait till Microsoft fixes this issue.

  • Type Updates in Windows search and press Enter.
  • Open Settings and go to Windows Update.
  • Select Update history and pick Uninstall updates.
  • When Control Panel opens, sort it by the date.
  • Select the most recent update and click Uninstall at the top.
  • Proceed with on-screen instructions to finish the process.
  • Go to the Windows update page once again and click Pause updates – pick the time you want.
  • Reboot your PC.

Uninstall updates

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About the author
Gabriel E. Hall
Gabriel E. Hall - Passionate computer expert

Gabriel E. Hall is an expert troubleshooter who has been working in the information technology industry for years.

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