0x800f081f windows server 2019

Many system administrators encounter the DISM error 0x800f081f on Windows Server 2019. This issue often appears during system-image repairs and can prevent further updates or restore operations. Let’s explore how to resolve it effectively and keep your server running smoothly.

TOC

What Is DISM Error 0x800f081f on Windows Server 2019?

DISM (Deployment Image Servicing and Management) is a powerful command-line tool used to manage and repair Windows images. On Windows Server 2019, running a command like:

dism /online /cleanup-image /restorehealth

may result in the error 0x800f081f. This error typically signifies that the DISM utility cannot locate the necessary source files to repair the system. When such files are missing or inaccessible, the tool fails to complete the image-repair process.

Why This Error Appears

In most cases, the error is linked to missing or corrupted system files. If you have Windows Server 2019 installed on your machine and you attempt to run the DISM utility, the process will look for a local cache—specifically, the component store located in the WinSxS folder. If the repair source is not available or is damaged, DISM displays the 0x800f081f error.

Common Symptom

• You type the dism /online /cleanup-image /restorehealth command.
• DISM stops partway through and reports Error 0x800f081f, stating that the source files could not be found.

Understanding the Root Cause

The fundamental reason behind DISM error 0x800f081f is that it cannot locate the files needed to replace the corrupted components. When Windows performs component store repairs, it must match the exact build, version, and patch level of the operating system.

Focus on the CBS_E_SOURCE_MISSING Status

Windows logs often reference CBS_E_SOURCE_MISSING. This indicates the image needs data from a source, but the source is absent or does not have matching files. The component-based servicing (CBS) engine is behind many Windows update and maintenance tasks, so if CBS fails, DISM often follows suit.

CBS_E_SOURCE_MISSING at a Glance

• Meaning: Critical files for the Windows image are absent or cannot be accessed.
• Cause: The local WinSxS folder is incomplete, the ISO used is incorrect, or network disruptions prevent accessing a valid source.
• Remedy: Provide a matching set of system files, usually from another server of the same version or the correct installation media.

How to Fix DISM Error 0x800f081f

Let’s walk through the most effective method to correct this problem on Windows Server 2019. Each step ensures DISM finds the files it needs.

Step 1: Verify Your Windows Server 2019 Build and Patch Level

Before searching for source files, confirm the server’s exact build. This helps ensure that any external source folder (e.g., from another machine or installation media) matches precisely.

Check System Information

• Press Windows Key + R, type winver, and press Enter.
• Make note of the OS build number (e.g., Version 10.0.17763).
• Ensure any source files you gather come from a system that shares the same build number.

Step 2: Locate a Matching WinSxS Folder

Since the error stems from missing or corrupted components, the simplest approach is to get the WinSxS folder from a machine running the same version, edition, and patch level of Windows Server 2019.

1. Find a healthy Windows Server 2019 host:

• Confirm it’s running the same build and patch level (e.g., monthly cumulative updates).
• Zip or share its C:\Windows\WinSxS folder.

1. Transfer the folder to the problematic server:

• You can copy it via a network share, removable media, or any secure file transfer method.
• Save it to a local drive on the target machine, for instance, C:\Source\WinSxS.

Why a Matching Patch Level Matters

Each Windows update can introduce new or altered system files. Using an outdated source with a newer server—or vice versa—can cause further errors or system instability. Matching the patch level ensures each required file is present.

Step 3: Point DISM to the Correct Source

Once you have a valid WinSxS folder, run DISM again. This time, specify a custom source path so the tool knows where to find the missing files.

Dism /Online /Cleanup-Image /RestoreHealth /Source:C:\Source\WinSxS /LimitAccess

• /Source: Instructs DISM to use the folder you provided instead of the default component store.
• /LimitAccess: Prevents DISM from contacting Windows Update online. This ensures it only looks in the specified folder.

Optional: Using the Original Installation Media

If you prefer or if you don’t have another machine available, you can use the original Windows Server 2019 installation media. Here’s how:

1. Mount the ISO or insert the DVD into the server.
2. Locate the install.wim or install.esd file, typically in the \sources directory.
3. Create a temporary folder for mounting the WIM, e.g., C:\MountWIM.
4. Mount the WIM using the command:

   dism /mount-wim /wimfile:D:\sources\install.wim /index:1 /mountdir:C:\MountWIM

(Adjust D: to match the drive letter of your ISO or DVD, and confirm which index matches your Server edition by running dism /get-wiminfo /wimfile:D:\sources\install.wim.)

1. Once mounted, you can point DISM to C:\MountWIM\Windows\WinSxS:

   dism /online /cleanup-image /restorehealth /source:C:\MountWIM\Windows\WinSxS /LimitAccess

After DISM completes, unmount the WIM:

dism /unmount-wim /mountdir:C:\MountWIM /discard

Or use /commit instead of /discard if you made changes you wish to keep.

Step 4: Check the Result and Reboot

If DISM successfully completes the operation, it will display a message indicating the restore operation finished correctly. To finalize:

1. Type:

   sfc /scannow

This double-checks the integrity of system files.

1. Reboot the server to ensure changes take effect.

Post-Reboot Verification

• Rerun dism /online /cleanup-image /scanhealth to confirm no corruption remains.
• Check Windows Update or any pending server roles/features to ensure everything behaves normally.

Additional Troubleshooting Tips

Even with the correct source, issues can occasionally arise. Here are some extra steps to consider.

Network Share vs. Local Copy

If your server is in a domain environment or behind multiple network segments, a direct network path may fail due to permissions or connectivity. Copying the WinSxS folder locally is generally more reliable.

Consider Group Policy Conflicts

Some domain policies may interfere with repairs or prevent changes to critical system files. Temporarily move the server to an organizational unit (OU) with fewer restrictions or apply local policies that allow the DISM operation to succeed.

Use DISM Logs for Clues

Windows logs errors and warnings in the DISM log (located in C:\Windows\Logs\DISM\dism.log). Search for references to “source not found” or “CBS_E_SOURCE_MISSING” to pinpoint exactly why the operation fails.

Sample Table of Common DISM Error Codes

Keeping track of these codes and understanding them can accelerate troubleshooting. Most revolve around the system not being able to locate or apply required components.

Offline Servicing Scenarios

There are instances where you may not want or be able to run DISM in an online mode, such as when the system is part of a sensitive production environment. Offline servicing is similar to the steps described above, but you work on an offline image or a VHD.

1. Mount or attach the offline VHDX/VHD.
2. Use dism /image:C:\MountOffline ... /restorehealth /source:....
3. Commit changes and unmount the image before placing it back into production.

Make sure to always match the OS version and keep track of indexes if you are using WIM-based servicing.

Best Practices to Prevent DISM Errors

Following certain strategies can help avoid these errors in the future.

Regularly Update Your Server

Consistent updates reduce the chance of file corruption. Have a patch management process in place to install monthly cumulative updates.

Maintain Backups of System State

A full backup or a system state backup can help roll back changes if something corrupts the system files beyond simple repair.

Keep Matching ISOs/Media On Hand

Whether your server runs in a lab or mission-critical environment, always store the official ISO or updated slipstreamed media for the same build to facilitate repairs.

Tip for Slipstreaming

• You can integrate (slipstream) the latest cumulative update into a Windows Server 2019 ISO. This ensures that when you mount it for DISM, it matches your server’s patch level.

Common Pitfalls and Solutions

Mismatch Between Source and Target

Symptom: The DISM command still fails, even with a seemingly correct source.
Cause: You used an ISO or WinSxS folder from a server with a different build.
Solution: Verify the exact version using winver or systeminfo to confirm everything lines up.

Mounting the Wrong WIM Index

Symptom: You pointed DISM to an install.wim but the repair still fails.
Cause: The default index might not match your Windows Server edition (e.g., Standard vs. Datacenter).
Solution: Run:

dism /get-wiminfo /wimfile:D:\sources\install.wim

Identify the correct index that corresponds to your edition, then mount or reference that index when pointing DISM to the WinSxS folder.

Permissions Issues When Using a Network Share

Symptom: Error about inaccessible folders.
Cause: The account running DISM does not have sufficient permissions on the share.
Solution: Provide the necessary share and NTFS permissions or copy the folder locally.

Conclusion

DISM error 0x800f081f on Windows Server 2019 often boils down to missing or mismatched source files. By identifying the correct OS build, finding a valid WinSxS folder, or mounting the right installation media, you can supply DISM with the files it needs to repair system components. Keep your server’s patch level consistent, maintain a reliable backup strategy, and ensure you always have matching installation media on hand. Following these best practices saves valuable time and helps you avoid future headaches with system-image repairs.

Updating your operating systems is important, but occasionally, you may encounter an error you have never seen before. One of the many error codes while updating Windows 10 or Windows 11 is 0x800f081f.

This error code can be accompanied by different error messages. Here are a few that you may see:

There were some problems installing updates, but we’ll try again later.
CBS_E_SOURCE_MISSING

The latter error message indicates that there are some files missing on your PC. This is usually encountered when you update your PC from an older version to a newer one, for example, from Windows 8 to Windows 10, or Windows 10 to Windows 11. After the upgrade has been performed, this error message appears while installing certain Windows components, as reported here.

The former error message is usually encountered when trying to install Windows updates through the Windows Update Settings page. The same error message can also be seen with the error codes 0x800F0906, 0x800F0907, and 0x800F0922.

If you are experiencing either of these error messages accompanied by the error code 0x800f081f, then this guide will give a step-by-step on how to fix the issue that addresses both sorts of errors.

What causes the 0x800f081f error in Windows

The 0x800f081f error can be caused by any number of reasons. this likely has to do with missing or corrupted system files, but can also be caused by certain mismatched configurations and compatibility issues. Here are some of the common reasons for the 0x800f081f error to occur:

• Issues with .NET Framework compatibility
• Corrupted or missing Windows Registry files
• Corrupted Windows Update files
• Corrupted user profile
• Misconfigured Group Policy settings
• Unstable network connectivity

The error code 0x800f081f has been encountered for a long time and has been observed in both Windows 10 and Windows 11. If you are in a similar situation, then this guide is exactly where you should be.

Fix Windows error code 0x800f081f

The solutions provided below are given in chronological order so that the more intensive and complicated mitigation processes are given towards the end. I suggest performing these fixes in the given order to fix the error code 0x800f081f and install that Windows update.

Note: The screenshots and the steps are targetted toward Windows 11, but also apply to Windows 10.

Run the Windows Update troubleshooter

The Windows operating system comes with built-in troubleshooters, including the Windows Update troubleshooter. The Windows Update troubleshooter can scan and potentially fix any detected issues relating to Windows updates and the optional features.

Perform the following steps to run the Windows Update troubleshooter:

1. Press the Windows Key + i to open the Settings app.

2. Navigate to the following:

   System >> Troubleshoot >> Other troubleshooters

3. Here, click Run in front of “Windows Update.”

   

   Картинка с сайта: www.itechtics.com

4. The troubleshooter will now run and scan for any anomalies. If any are found, it will attempt to fix them, as in the image below. You can then Close the troubleshooter.

   

   Картинка с сайта: www.itechtics.com

Enable .NET Framework 3.5 and 4.8

Some Windows components require that .NET framework 3.5 or 4.8 be enabled on your system for them to install and work properly. If the required version isn’t installed, it can throw the error 0x800f081f.

Use the following steps to enable the .NET Framework versions:

1. Press the Windows Key + R to open the Run Command box.

2. Type in “optionalfeatures” and press Enter to open the Optional Features dialog box.

3. Select both “.NET Framework 3.5” and “.NET Framework 4.8 Advanced Services” and click OK.

   Note: If already enabled, leave it be.

   

   Картинка с сайта: www.itechtics.com

4. [Conditional] Restart the computer if asked.

Once .NET is installed, check to see if the error has been mitigated. If it still exists, then there are still a few things you do to fix it.

Clear SoftwareDistribution and Catroot2 folder

If the “0x800f081” error code is occurring during a Windows update installation, then you can apply this fix.

The SoftwareDistribution folder can be found in C:\Windows, while the Catroot2 folder can be found at C:\Windows\System32\. The SoftwareDistribution folder contains temporary files within a subfolder (download) that are required to install a Windows update, while the Catroot2 folder contains Windows update-related files and folders, including signature files from Microsoft.

Quite often, a Windows update fails to install and experiences an error code because of the corrupted files inside these 2 folders. In this case, these temporary files need to be removed and the update process needs to be started from the top.

Here is how to clear the SoftwareDistribution and the CarRoot2 folder:

1. Navigate to the following location using File Explorer:

   C:\Windows\SoftwareDistribution\Download

2. Press the CTRL + A key combination to select everything.

3. Hold down the Shift key and press Delete to delete all selected items permanently.

4. If asked for administrative rights, select “Do this for all current items” and click Continue.

   

   Картинка с сайта: www.itechtics.com

5. [Conditional] If certain items are currently in use and cannot be deleted, skip them.

6. Now navigate to the following path:

   C:\Windows\System32\Catroot2

7. Select everything here again and delete them.

After performing the steps above, we also recommend restarting the Windows Update services. Therefore, before attempting to install the pending updates/components, we suggest that you apply the steps in the next section too.

Restart Windows Update services

Sometimes problematic Windows services can be the culprit behind the “0x800f081f” error. In this case, any service relating to Windows Update can cause the error. Try giving these services a restart and check if it resolves the issue.

Note: The following steps restart the service from the Windows command line since the process is simpler. However, you can also restart the services from the Service Console (services.msc).

1. Press the Windows key + R to open the Run Command box.

2. Type in “cmd” and press CTRL + Shift + Enter to launch an elevated Command Prompt.

3. Now run the following commands to stop the services associated with Windows Update:

   net stop bits
   net stop wuauserv
   net stop appidsvc
   net stop cryptsvc

   

   Картинка с сайта: www.itechtics.com

4. Then, run these commands to start them back up:

   net start bits
   net start wuauserv
   net start appidsvc
   net start cryptsvc

   

   Картинка с сайта: www.itechtics.com

Once the Windows Update services have been restated and the SoftwareDistribution folder has also been cleared, check to see if you still encounter the “0x800f081f” error when installing the Windows update or the Windows component.

If the error persists, continue to perform the more aggressive fixes shared below.

Adjust Group Policy setting

If you are experiencing the “0x800f081f” error while trying to install an optional Windows update, then it may be possible that your system administrator has changed the Group Policy. In this case, you can readjust it to allow the installation of the optional Windows Features.

Use the following steps to allow the installation of optional Windows features and fix the “0x800f081f” error:

Note: The Group Policy Editor is required for this fix, which isn’t available on Windows Home edition by default. If you have the Home edition, then here is a guide to install gpedit.msc.

1. Press the Windows key + R to open the Run Command box.

2. Type in “gpedit.msc” and press Enter to launch the Group Policy Editor.

3. Navigate to the following path from the left pane:

   Local Computer Policy > Computer Configuration > Administrative Templates > System

4. In the right pane, double-click the policy “Specify settings for optional component installation and component repair.”

   

   Картинка с сайта: www.itechtics.com

5. Select Enabled and then click Apply and OK.

   

   Картинка с сайта: www.itechtics.com

6. Next, run the following command to implement the changes made to the Group Policy in an elevated Command Prompt instance:

   GPUpdate /Force

   

   Картинка с сайта: www.itechtics.com

After performing these steps, check if you are now able to install the optional updates.

Fix corrupted files with DISM and SFC

Windows comes with preinstalled tools to help fix the OS. Apart from the built-in troubleshooter you can find in the Settings app, Windows also comes with a Deployment Image Servicing and Management (DISM) tool, System File Checker (SFC), and a Check Disk (CHKDSK) utility, where each performs a different scan and attempts to automatically fix any glitches in the OS.

Run the following cmdlets in the given order in an elevated Command Prompt to attempt and repair the current Windows OS installation:

DISM.exe /Online /Cleanup-image /Checkhealth
DISM.exe /Online /Cleanup-image /Scanhealth
DISM.exe /Online /Cleanup-image /Restorehealth
sfc /scannow

Картинка с сайта: www.itechtics.com

If the SFC does find any corrupted files that it was able to fix, then check whether the error persists. If not, continue to perform the next solution.

Register system files

Unregistered system files can cause the respective services to not be able to run. You can register Dynamic Link Libraries (DLLs) using the “regsvr32” command line tool.

Follow these steps to register the system files associated with Windows Update:

1. Press the Windows key + R to open the Run Command box.

2. Type in “cmd” and press CTRL + Shift + Enter to launch an elevated Command Prompt.

3. Execute the following commands:

   regsvr32.exe /s atl.dll
   regsvr32.exe /s urlmon.dll
   regsvr32.exe /s mshtml.dll

   

   Картинка с сайта: www.itechtics.com

After registering these files, I also recommend resetting the network configuration.

Reset network configuration

The “0x800f081f” error can also occur because of network issues. Even if you have a stable internet connection, the said error can occur because of certain network configurations on your computer, which you can reset to defaults with simple commands in the Command Prompt.

Here are the steps to reset the network preferences:

1. Press the Windows key + R to open the Run Command box.

2. Type in “cmd” and press CTRL + Shift + Enter to launch an elevated Command Prompt.

3. Run the following commands in the given order:

   netsh winsock reset
   netsh winsock reset proxy

   

   Картинка с сайта: www.itechtics.com

4. Restart the computer.

After the restart, check to see if the issue has been mitigated. If it persists, then you can switch to a bit more aggressive solutions shared below.

Delete WUServer and WIStatusServer from Windows Registry

If your system is behind a Windows Server Update Services (WSUS), certain Registry values can prevent Windows updates from installing on your PC, resulting in the “0x800f081f” error. It can occur if certain values are corrupted.

This can often be fixed by deleting the Windows Registry values “WUServer” and “WIStatusServer.” Here are the steps to safely delete them:

1. Press the Windows key + R to open the Run Command box.

2. Type in “regedit” and press Enter to open the Registry Editor.

3. Now navigate to the following path from the left pane:

   Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

   Note: If the “WindowsUpdate” key does not exist, then you can close the Registry Editor and skip this solution right now.

4. In the right pane, select the 2 values and delete them:

   • WUServer
   • WIStatusServer

5. Close the Registry Editor and restart the computer for the changes to take effect.

When it restarts, check to see if you still encounter the “0x800f081f” error while installing Windows updates.

Perform an in-place upgrade

An in-place upgrade is when you upgrade your operating system using an ISO file, but all your personal data, files, and folders are retained. This replaces the corrupted system files and makes your PC act normal again.

To perform an in-place upgrade, perform these steps:

1. Start by downloading a Windows ISO image. Click on the respective link below to download one:

   • Download Windows 10 (all versions) ISO
   • Download Windows 11 (all versions) ISO

2. Mount the ISO to your system.

   

   Картинка с сайта: www.itechtics.com

3. Navigate to the mounted drive and run the “Setup.exe” file by double-clicking it.

   This will launch the Windows installation setup.

4. On the welcome screen, click “Change how setup downloads updates.”

   

   Картинка с сайта: www.itechtics.com

5. Select “Not right now” and click Next.

   

   Картинка с сайта: www.itechtics.com

6. Accept the licensing terms.

   

   Картинка с сайта: www.itechtics.com

7. Finally, click Install and wait for the process to complete.

   

   Картинка с сайта: www.itechtics.com

When the in-place upgrade completes, you should now now longer encounter the “0x800f081f” error.

In the odd change that it is still there, then there is still one trick left up our sleeves.

Perform a cloud reset

If none of the solutions have worked thus far, try resetting the Windows OS to its default values and configurations.

Although this is not an ideal situation, but is now the only hope left in fixing the error once and for all. Resetting the OS will restore all critical system files, services, and processes to their default operations, and maintain your personal data

You can reset the PC where it uses the same files and folders to reinstall the OS or perform a cloud reset. In both these options, you can keep your personal files and folders in the non-boot partitions.

I recommended that you perform a cloud reset so that all problematic files are replaced with fresh, correct ones. Here are the steps to perform a cloud reset:

1. Press the Windows Key + i to open the Settings app.

2. Click System.

3. Go to Recovery.

   

   Картинка с сайта: www.itechtics.com

4. Click “Reset PC.”

   

   Картинка с сайта: www.itechtics.com

   The reset PC wizard will now open.

5. Select “Keep my files.”

   

   Картинка с сайта: www.itechtics.com

6. Select “Cloud download.”

   

   Картинка с сайта: www.itechtics.com

7. Click Next.

   

   Картинка с сайта: www.itechtics.com

8. Click Reset.

   

   Картинка с сайта: www.itechtics.com

The wizard will now begin downloading fresh files from Microsoft servers and then reset your computer to its default configurations, also replacing a majority of the system files that may have been corrupted. This step can take a while depending upon your internet connection, and your PC may restart.

When a fresh OS has been installed, the error should be mitigated and you should now be able to install the Windows updates.

This concludes all the methods to fix the “0x800f081f” error code on a Windows PC.

Ending thoughts

The “0x800f081f” error code can be encountered under different circumstances. These can range from installing optional features, and certain Windows components, or simply upgrading the OS to a newer version through Windows Update.

This is a common issue reported by many Windows users and has been around since the launch of Windows 10. Even with the latest Windows 11 version 22H2, people are reportedly seeing the same error message. This leads me to believe that this error is not going to be permanently fixed by Microsoft anytime soon, and can come up with any Windows update.

This guide details the steps required to fix the “0x800f081f” error regardless of the circumstances you encountered it.