How to fix System.Xml.ni.dll errors in Windows

Matthew Adams By: Matthew Adams
4 minute read

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The system.xml.dll is a DLL system file that is a part of NET Framework. Thus, it is one of the DLL files installed with NET Framework versions. There are various system.xml.dll error messages that can pop up in Windows if files are corrupted in some way, missing or not correctly installed. You can fix most system.xml.dll errors much the same as other DLL file issues. These are a few of the various potential resolutions for any error message that includes system.xml.dll within it.

Fix System.Xml.ni.dll errors for good

    1. Run the System File Checker Tool
    2. Scan the Registry
    3. Scan for Malware
    4. Reregister the System.xml.ni.dll
    5. Run the NET Framework Repair Tool
    6. Roll Windows Back to a Restore Point
    7. Fix System.xml.ni.dll Errors With DLL Utility Software

1. Run the System File Checker Tool

The System File Checker can come in handy for fixing various DLL errors. The System File Checker scan will fixes most corrupted files it detects. This is how you can utilize the SFC tool in Windows 10.

  • Press the Windows + X hotkey and select Command Prompt (Admin) on the menu.
  • First, input ‘DISM.exe /Online /Cleanup-image /Restorehealth’ and press the Enter key to initiate the Deployment Image tool in Windows.

  • Then initiate an SFC scan by entering ‘sfc /scannow’ and pressing Enter.

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The SFC scan will usually last between 20-30 minutes. When the scan is complete, the Prompt window will tell you if files were fixed. Restart Windows if WRP does repair corrupted files.

2. Scan the Registry

DLL errors can often be due to invalid registry entries. As such, scanning the registry might fix numerous system.xml.dll error message. You can scan the registry with the utilities included in this software guide. CCleaner is a utility that millions of users scan the registry with, and this is how you can clean the registry that software.

  • First, click Download on this page to save the freeware CCleaner’s installer. Open that installer to add CCleaner to Windows.
  • Click Registry to open CCleaner’s registry tools.

Clean registry errors

  • Select all the registry check boxes, and press the Scan for issues button.
  • Press the Fix selected issues button. Then you can select to back up the registry.
  • Click Fix All Selected Issues to repair the registry.

3. Scan for Malware

Malware targets DLL files. As such, scanning for malware is usually a suggested resolution for fixing DLL issues. You can scan for malware with Windows Defender, but the freeware version of Malwarebytes is one of the more notable third-party utilities for purging malware. Click Free Download on this webpage to add that utility to Windows 10. Then you can press the Scan Now button in Malwarebytes to initiate a scan.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patented Technologies (requires upgrade).

4. Reregister the System.xml.ni.dll

System.xml.ni.dll error messages might pop up if the DLL is not registered properly. To remedy that, you can reregister the DLL with the Microsoft Register Server tool (Regsvr32). This is how you can reregsiter the system.xml.ni.dll with Regsvr32.

  • Open the Command Prompt as administrator via the Win + X menu.
  • Input ‘regsvr32 /u system.xml.ni.dll’ in the Command Prompt, and press the Return key.
  • To register system.xml.ni.dll again, input ‘regsvr32 /i System.Xml.ni.dll’ and press Enter.

5. Run the NET Framework Repair Tool

As system.xml.ni.dll is a NET Framework DLL, a system.xml.ni.dll error is also a NET Framework issue. As such, the NET Framework Repair Tool might also come in handy for fixing system.xml.ni.dll errors. You can download that tool by clicking Download on this page. Then select NetFxRepairTool.exe, and press the Next button. That might fix setup issues with NET Framework when you press the utility’s Next button.

6. Roll Windows Back to a Restore Point

System Restore is also a handy tool for fixing DLL errors. That will undo Windows registry changes and recover missing DLL system files. So System Restore might fix a system.xml.ni.dll error if you select to restore Windows to a date when there weren’t any system.xml.ni.dll error messages popping up on your desktop or laptop. You can roll back Windows with System Restore as follows.

  • Open Run from the Win + X menu.
  • Input ‘rstrui’ in Run’s text box, and press the Enter key.

  • Click the Next button to open a list of system restore points as below.

  • Choose a system restore point to roll Windows back to.
  • Restoring Windows also removes software installed after a restore point. To check what software gets removed with a restore point, press the Scan for affected programs.

  • To confirm the selected restore point, press the Next and Finish buttons.

7. Fix System.xml.ni.dll Errors With DLL Utility Software

There are numerous DLL fixer utilities designed more specifically for resolving DLL error messages. Software such as DLL Suite and DLL Tools scan for and fix corrupted and missing DLL files. You can also download missing DLL files with those utilities.

The DLL Suite has one of the largest DLL file databases, and that software supports 75 alternative versions of the Windows platforms from XP to 10. You can try out an unregistered version of DLL Suite by clicking Free Trial on this page. The full DLL Suite version is retailing at $9.99.

Those are resolutions that can fix various system.xml.ni.dll errors in Windows 10, 8 or 7. Some of those resolutions may also fix other DLL file errors.

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patented Technologies (requires upgrade).

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