Occasionally, the makecab.exe process starts automatically when you boot up your computer and uses a significant amount of CPU power, which can lead to system slowdowns. If you're unsure how to resolve this, this guide from MiniTool offers several effective solutions.

Makecab.exe Starts at Boot and Uses High CPU

What exactly is makecab.exe? This system file is responsible for compressing large Component-Based Servicing (CBS) log files generated by Windows. Normally, it runs briefly and doesn’t cause performance issues.

However, in some cases, numerous instances of makecab.exe may be launched repeatedly, consuming excessive CPU resources and degrading system performance. Why does makecab.exe run at startup? The most common trigger is a failed Windows Update. In other cases, malware or viruses may have altered system files, causing the process to run continuously.

You might consider disabling makecab.exe, but doing so is not recommended because it plays a crucial role in managing log files. Terminating the process via Task Manager may offer temporary relief, but the CBS logs will continue growing until the next restart, potentially triggering the cycle again.

How to Fix the “Makecab.exe Running at Startup” Problem

Below are several reliable methods to stop makecab.exe from consuming high CPU and running at startup.

Method 1: Remove CBS Log Files via File Explorer

One way to address the issue is manually deleting the CBS log files using File Explorer:

Step 1: Launch File Explorer and go to: C:\Windows\Logs\CBS.makecab.exe

Step 2: Select and delete all CBS log files located in this directory.

After deletion, restart your computer and verify whether the high CPU usage has stopped.

Method 2: Delete Logs Using an Elevated Command Prompt

Another efficient method involves using an administrator-level Command Prompt:

Step 1: Type Command Prompt in the Search bar, right-click on it, and choose Run as administrator.

Step 2: Enter the following command and press Enter:

del /f %windir%\logs\cbs\*.log

Once executed, restart your PC and check if the problem persists.

Method 3: Perform an SFC Scan

To address potential system file corruption that might be causing repeated log generation, run a System File Checker scan:

Step 1: Open the search bar, type Command Prompt, then select Run as administrator.

Step 2: Input the command below and press Enter:

sfc /scannow

Wait for the scan to complete 100%. Review the results to see if any corrupted files were detected. If errors are found, you may need to run the command multiple times until all issues are resolved.

Tip: Keep your Windows system updated to ensure you receive fixes for known bugs and issues.

Method 4: Remove Suspicious Applications

If the problem began after installing new software, especially free or third-party programs, consider uninstalling them:

Step 1: Press Windows R, type appwiz.cpl in the Run dialog, and click OK to open Programs and Features.

Step 2: Look for any recently added or questionable applications, right-click them, and select Uninstall/Change to remove them.

Final Thoughts

Is makecab.exe launching at startup or using excessive CPU on your Windows 10 machine? Try the solutions above to resolve the issue. With these steps, you should be able to restore normal system performance and use your PC without interruptions.

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