How to fix '0x800f081f' DISM error?

The DISM error encountered "0x800f081f" is usually caused by the Windows update component's inability to access the required system files. 1. First check the system file path and update the source settings to ensure that the ISO file is correctly mounted and has correct paths, or try to run the DISM command directly without specifying the source path. 2. Use a Windows image that is consistent with the current system version, such as confirming the system version by running winver and downloading the corresponding ISO file from Microsoft's official website. 3. Check the network connection and Windows Update service to ensure the network is normal, and restart the Windows Update, Background Intelligent Transfer Services and Cryptographic Services services, while cleaning up the update cache. 4. Try to use SFC to scan and repair the system files first. If SFC finds corrupt but cannot be repaired, you can run the DISM command to specify the health source before running SFC to complete the repair.

I encountered the DISM error "0x800f081f", which is usually when you are trying to repair the system image or install Windows updates. The core of the problem is often related to the fact that the Windows update component cannot access the required system files. Simply put, it may be that the system file is corrupt, the update source path is incorrect, or there is a problem with the network connection.

Below are some common troubleshooting and repair methods that you can try step by step.

1. Check the system file path and update the source settings

A common cause of this error is that the installation source path used by the DISM command is incorrect. If you are using mounted Windows images (such as ISO files) for repair, you need to make sure the path is correct.

• Confirm whether the ISO file is mounted correctly and whether the path is written correctly (for example, D:\sources\install.wim ).
• If you are using a local system image (such as WinRE or WinSxS), you can try running the command directly without specifying the source path:

 DISM /Online /Cleanup-Image /RestoreHealth

If the system can find the default repair source, it may not be necessary to specify it manually.

2. Use the correct Windows version of mirroring

DISM requires that the installation source you use must be consistent with the current system version. For example, if you are running Windows 11 22H2, the ISO you are using to fix must also be of 22H2 version, otherwise there will be errors due to component mismatch.

• You can view the current system version by running winver .
• Download the corresponding ISO file from Microsoft's official website (such as through Media Creation Tool).
• After mounting ISO, use commands similar to the following:

 DISM /Online /Cleanup-Image /RestoreHealth /Source:C:\mount\windows /LimitAccess

Make sure the path points to the correct Windows image file in ISO.

3. Check network connections and Windows Update Services

DISM may attempt to download repair files from Microsoft servers at runtime, especially if you do not specify a local source. If there is a network problem, or if the Windows Update service is disabled, it may also cause the error 0x800f081f.

You can try the following steps:

• Make sure the computer can access the Internet normally.
• Check and restart Windows Update related services:
  • Open the Services Manager ( services.msc )
  • Find the "Windows Update" service and right-click to restart
  • Check both "Background Intelligent Transfer Service" and "Cryptographic Services"

You can also run the following command to clean up the update cache:

 net stop wuauserv
net stop bits
del %windir%\softwaredistribution\* /q
net start wuauserv
net start bits

4. Try to use SFC to repair system files first

Sometimes, the system file itself is corrupted, causing DISM to not work properly. You can run SFC scan first to see if there is any problem:

 sfc /scannow

If the SFC report found a damage but couldn't be fixed, try to have it fix it using a DISM-prepared health mirror:

• First run the DISM command to specify a healthy source:

 DISM /Online /Cleanup-Image /ScanHealth /Source:C:\mount\windows /LimitAccess

Then run SFC.

Basically these are the methods. Although this error seems scary, it is mostly a problem with the path, source version, or network settings. As long as you check it step by step, it can usually be solved.

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