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[Fix] DISM and .NET Framework 3.5 Error 0x800F081F

Last Updated on: August 7, 2023 by Ramesh

DISM Error 0x800f081f The source files could not be found

When running the following DISM command, the error 0x800F081F may appear in some systems. The same error occurs when installing the .NET Framework in Windows 10.

Dism /Online /Cleanup-Image /RestoreHealth

Error: 0x800f081f
The source files could not be found.
Use the "Source" option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.

DISM.log

Error DISM DISM Package Manager: PID=13368 TID=5124 Failed finalizing changes. - CDISMPackageManager::Internal_Finalize(hr:0x800f081f)
Error DISM DISM Package Manager: PID=13368 TID=5124 The source files could not be found; their location must be specified using the /source option to restore the feature. - GetCbsErrorMsg
Error DISM DISM Package Manager: PID=13368 TID=5124 Failed processing package changes with session option CbsSessionOptionRepairStoreCorruption - CDISMPackageManager::RestoreHealth(hr:0x800f081f)
Error DISM DISM Package Manager: PID=13368 TID=5124 The source files could not be found; their location must be specified using the /source option to restore the feature. - GetCbsErrorMsg
Error DISM DISM Package Manager: PID=13368 TID=5124 Failed to restore the image health. - CPackageManagerCLIHandler::ProcessCmdLine_CleanupImage(hr:0x800f081f)
Error DISM DISM Package Manager: PID=13368 TID=5124 Failed while processing command cleanup-image. - CPackageManagerCLIHandler::ExecuteCmdLine(hr:0x800f081f)

CBS.log

CBS    Exec: Processing complete, session(Corruption Repairing): 30459372_734419507 [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
CBS    Session: 30459372_734419507 failed to perform store corruption detect and repair operation. [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
CBS    Session: 30459372_734419507 finalized. Download error: 0x80240022 [Unknown Error], Reboot required: no [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
CBS    Failed to FinalizeEx using worker session [HRESULT = 0x800f081f]

The same error (0x800F081F – CBS_E_SOURCE_MISSING) may occur when you attempt to install .NET Framework 3.5 via Optional Features.

Windows couldn't find required files to complete the requested changes. Make sure you're connected to Internet, and try again:

Error code: 0x800F081F

DISM.log

The source files could not be found.
Use the "Source" option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
0x800F081F - CBS_E_SOURCE_MISSING

This post tells you how to fix the .NET Framework installation and the DISM error 0x800f081f in Windows 10.Read more

Error 0xc000012f “Bad Image” When Running a Program

Last Updated on: August 9, 2023 by Ramesh

When you run a program in Windows, error 0xc000012f may pop up, mentioning that the binary you’re trying to run is corrupted. Here are some examples, with the full error message verbatim:

<filename> is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f

How to Convert ESD to WIM (Install.ESD to Install.WIM) in Windows ISO

Last Updated on: August 2, 2023 by Ramesh

Summary: In this article, we will see how to extract or convert install.esd to install.wim file format in the Windows 10 ISO image using DISM or other methods.

The Windows Imaging Format (WIM) is a file-based disk image format developed by Microsoft to help deploy Windows operating system. The DISM tool (Deployment Image Service and Management Tool) can perform servicing tasks on a WIM file. For example, you can add or remove a device driver from an offline image.

However, when you download Windows 10 using the Media Creation Tool or the Windows 10 Upgrade Assistant, you may find install.esd instead of install.wim. The install.wim has given way to install.esd, an Electronic Software Download (ESD) file format, due to its high compression ratio.Read more

[Fix] Turn Windows Features On Or Off is Blank in Windows 10/11

Last Updated on: September 14, 2022 by Ramesh

The Windows Features dialog box (optionalfeatures.exe) lets you add or remove additional or optional Windows features. For instance, you can remove Media Features → Windows Media Player using the Windows Features (“Turn Windows Features On Or Off”) dialog box if you no longer plan to use WMP. Sometimes, the “Turn Windows Features On Or Off” … Read more

How to Repair Windows 10/11 System Files Using DISM and SFC

Last Updated on: July 8, 2023 by Ramesh

If the system files in your Windows 10/11 computer become corrupt and the System File Checker (SFC /scannow) is unable to reinstate the critical system files, it’s due to corruption of the Component Store located in the C:\Windows\WinSxS directory. This directory contains the files needed for the SFC utility to restore missing or damaged system files. The Component store stores all the Windows system files grouped by components and as hard links.

Disk Cleanup Bug : 3.99 TB Used by Windows Updates [Fixed]

Last Updated on: April 10, 2024 by Ramesh

After installing a Cumulative Update, when you run Disk Cleanup (cleanmgr.exe) as administrator to cleanup system files, it may incorrectly show 3.99 TB as being occupied by older versions of Windows Updates.Read more

How to Find Windows version, build and edition from ISO or DVD

Last Updated on: March 23, 2023 by Ramesh

Windows 10 or Windows 11 ISO files downloaded from Microsoft will have descriptive names, such as en_windows_10_pro_10586_x64_dvd.iso and en_windows_10_pro_14393_x86_dvd.iso, depending upon the variant you downloaded. The file name depicts the language, version, build edition, and the bitness of the Operating System contained in the ISO.Read more

How to Backup and Restore Device Drivers in Windows 11/10

Last Updated on: January 8, 2023 by Ramesh

This article tells you how to export/backup and import/restore the device drivers in Windows 10 or 11. The task can be accomplished using the DISM command-line tool or PowerShell.

If you have OEM branded computer, you’re usually provided with a restore media or a recovery partition on the hard drive. And restoring the computer using the OEM’s recovery options would put back all the pre-installed software and drivers.Read more

How to Reinstall Microsoft Print to PDF After Deleting it Accidentally

Last Updated on: November 17, 2022 by Ramesh

Windows 10 and 11, as you know, includes the Microsoft Print to PDF virtual printer built-in that can print (convert) documents to PDF format from any application.

Microsoft Print to PDF is a handy tool in Windows 10/11. In the previous Windows Operating Systems, users needed to use a third-party tool or virtual printer driver to convert documents or web pages to PDF. Most users, including me, have been relying upon the Cute PDF Writer driver or similar drivers supplied with PDF reader applications — e.g., Adobe Acrobat or Fox It Reader. And don’t forget Microsoft’s own Office Add-in: Microsoft Save as PDF or XPS.

Interestingly, many Windows 10/11 users accidentally delete Microsoft Print to PDF and wonder how to restore it. This post explains how to restore/reinstall the Microsoft Print to PDF printer if you’ve accidentally deleted it.Read more