Solve the high CPU usage problem of Capability Access Manager Service

The Capability Access Manager Service is responsible for granting specific applications permissions to access system resources in a secure environment. However, some users found that the service would cause the CPU usage to remain high, even reaching 80% to 90%. This article will provide several ways to solve this problem.

Method 1: Disable SysMain and Capability Access Manager services

Disabling these two services can reduce CPU consumption.

Step 1: Press Win R key to open the run window, enter services.msc and press Enter.

Step 2: Find "Capability Access Manager Service", double-click to open, and change "Startup Type" to "Disabled".

Click Apply > OK to save the changes. Repeat the above steps for the "SysMain" service.

Method 2: Repair corrupt system files

Corrupted system files may cause high CPU usage for Capability Access Manager Service. Running an SFC scan can fix these corruptions.

Step 1: Enter "Command Prompt" in the search bar and right-click to select "Run as Administrator".

Step 2: Enter sfc /scannow and press Enter to execute.

If the command fails to execute, try running the DISM /Online /Cleanup-Image /RestoreHealth command.

Method 3: Scan the malware

Malware infections can also lead to high CPU occupancy.

Step 1: Press the Win I key to open the settings, click "Update and Security" > "Windows Security" > "Virus and Threat Protection".

Step 2: Click Scan Options > Microsoft Defender Scan Offline > Scan Now.

Method 4: Try to start cleanly

Clean boot starts Windows with minimal drivers and startup programs, helping to determine which service affects performance.

Step 1: Enter "System Configuration" in the search bar and open it.

Step 2: In the Services tab, select the Hide all Microsoft services check box, and then click Disable all.

Step 3: In the "Startup" tab, click "Open Task Manager" to disable unnecessary startup programs.

Restart the computer to see if the problem is resolved. If the problem disappears, it means that a program triggers a high CPU occupancy and needs to be found and removed.

Method 5: Install Windows Update

If there are Windows updates to be installed, install them.

Step 1: Go to Settings > Update & Security > Windows Update.

Step 2: Click "Check Updates" to download and install the updates to be installed.

Method 6: Clean installation of Windows

If none of the above methods work, you can consider installing Windows cleanly. Be sure to back up your data before doing this. Backup software such as MiniTool ShadowMaker can help you back up files, folders, partitions, disks and systems.

Step 1: Open Settings > Update & Security > Recover.

Step 2: Click "Start" under "Reset this PC".

Summarize

This article provides a variety of solutions to the high CPU occupancy rate of Capability Access Manager Service. If you need to enhance data security, it is recommended to use backup software for data backup.

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