The e90002 error in Windows 10 typically indicates a corruption within the System.Xml.ni.dll file, which is part of the .NET Framework. This issue often prevents applications from launching or causes system instability. To resolve this, you must repair the .NET Framework components and ensure your system files are intact using built-in Windows tools.
Understanding the Error Source
The
e90002 error code is specifically linked to failures in loading native images for the XML library. The
System.Xml.ni.dll file is a pre-compiled version of the standard XML library used by many Windows applications and services. When this file becomes corrupted, missing, or incompatible with the current .NET Framework version, applications relying on it will crash or fail to start. This is not usually a hardware failure but rather a software integrity issue that requires targeted repair steps.
Repairing the .NET Framework
The most effective first step is to repair the .NET Framework installation, as this library manages the
System.Xml.ni.dll file. You can do this through the Control Panel without needing third-party tools.
- Navigate to Control Panel > Programs > Programs and Features.
- Click on Turn Windows features on or off in the left sidebar.
- In the list of features, locate .NET Framework 3.5 (includes .NET 2.0 and 3.0) and .NET Framework 4.8 Advanced Services (or similar version depending on your OS build).
- Uncheck both boxes to disable them, then click OK. Allow Windows to apply changes and restart your computer if prompted.
- After restarting, return to the same Turn Windows features on or off menu.
- Re-check both .NET Framework options and click OK again.
- Let Windows reinstall the components and restart the system once more.
This process forces Windows to replace any damaged DLL files with fresh copies from the system cache.
Running System File Checker (SFC)
If the .NET repair does not resolve the issue, general system file corruption may be the cause. The System File Checker (SFC) utility scans protected Windows files and replaces incorrect versions with correct Microsoft ones.
- Press
Windows Key + X and select Windows PowerShell (Admin) or Command Prompt (Admin).
- Type the following command and press Enter:
sfc /scannow.
- Wait for the scan to complete. This may take several minutes.
- If the tool reports that it found corrupt files and successfully repaired them, restart your PC.
If SFC cannot fix the issues, you should proceed to the Deployment Image Servicing and Management (DISM) tool to repair the underlying Windows image.
Using DISM to Restore Health
The DISM tool fixes deeper component store issues that SFC cannot access. It is particularly useful when DLL errors persist after basic repairs.
- Open an elevated Command Prompt or PowerShell window as described above.
- Run the command:
DISM /Online /Cleanup-Image /RestoreHealth.
- This process may appear stuck at certain percentages; allow it to run until completion.
- Once finished, run
sfc /scannow again to ensure all files are now consistent.
This two-step approach ensures both the local file store and the online component store are synchronized and free of corruption.
Updating Windows and Drivers
Outdated system components can sometimes trigger compatibility errors with the .NET Framework. Ensure your Windows 10 installation is fully updated, including optional driver updates. Navigate to
Settings >
Update & Security >
Windows Update and click
Check for updates. Install any pending cumulative updates, as these often contain patches for known framework bugs. Additionally, check for critical driver updates under
Advanced options >
Optional updates, particularly for chipset drivers, as they influence how system libraries are loaded.
For users experiencing broader connectivity issues alongside this error, you might also want to review remote desktop configurations to rule out network-layer conflicts, as seen in our guide on
RDP Connect to Work Computer.
Performing a Clean Boot
Sometimes, third-party software interferes with the loading of
System.Xml.ni.dll. A clean boot starts Windows with a minimal set of drivers and startup programs, helping to isolate the conflict.
- Press
Windows Key + R, type msconfig, and press Enter.
- Go to the Services tab, check Hide all Microsoft services, then click Disable all.
- Go to the Startup tab and open Task Manager to disable all startup items.
- Restart your computer. If the error disappears, re-enable services and startups one by one to find the culprit.
This method is essential if the error occurs only when specific non-Microsoft applications are running.
Frequently Asked Questions
Can I manually replace System.Xml.ni.dll?
No, you should never manually copy and paste DLL files from other computers or websites. This often leads to version mismatches and further system instability. Always rely on Windows Repair tools or official Microsoft updates to restore system files.
Does antivirus software cause this error?
Antivirus software rarely causes the e90002 error directly, but it can interfere with the repair process if it blocks system file modifications. Temporarily disabling real-time protection while running SFC or DISM commands may help if the tools fail to complete successfully.
What if the error persists after all repairs?
If the error continues despite repairing the .NET Framework and running DISM, consider performing an in-place upgrade of Windows 10. This reinstalls the operating system while keeping your personal files and applications intact, effectively resetting all system components.
Is this error related to unknown file types?
While both involve file associations, the e90002 error is specific to compiled .NET assemblies, not generic file extensions. For issues involving unrecognized file extensions causing crashes, refer to our guide on
How to Identify and Delete Unknown File Types in Windows 10.
Will updating Windows remove the error?
Updating Windows alone may not fix the error if the corruption already exists. However, updates provide the necessary environment for repair tools to function correctly. Always update Windows before attempting complex repairs to ensure compatibility with diagnostic utilities.