C_866.NLS: How to Fix, Download, and Update

Last Updated: 11/25/2023
[Average Article Time to Read: 4.7 minutes]

NetLogo Source Code files, such as C_866.NLS, are considered a type of Font (NetLogo Source Code) file. They are associated with the NLS file extension, developed by Microsoft for Windows 10.

C_866.NLS was first released for Windows Vista Operating System on 11/08/2006 with Windows Vista. The newest file release date for Windows 10 was 07/29/2015 [version 10]. C_866.NLS is packaged with Windows 10, Windows 8.1, and Windows 8.

Below, you find comprehensive file information, instructions for simple NLS file troubleshooting, and list of free C_866.NLS downloads for each available file version.

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File Overview


General Information
File Name: C_866.NLS
File Extension: NLS file extension
File Type: Font
Description: NetLogo Source Code
User Popularity Rating:
 
Developer and Software Information
Software Program: Windows 10
Developer: Microsoft
Software: Windows
Software Version: 10
File Details
File Size (Bytes): 66594
Oldest File Date: 09/18/2006
Latest File Date: 03/18/2017


What are C_866.NLS Error Messages?


General C_866.NLS Runtime Errors

C_866.NLS file errors often occur during the startup phase of Windows, but can also occur while the program is running. These types NLS errors are also known as “runtime errors” because they occur while Windows is running. Here are some of the most common C_866.NLS runtime errors:

Microsoft Visual C++ Runtime Library

Runtime Error!

Program: C:\Windows\System32\C_866.NLS

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.


Most NLS errors are due to missing or corrupt files. Your C_866.NLS file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, C_866.NLS file corruption could be caused from a power outage when loading Windows, system crash while loading or saving C_866.NLS, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix C_866.NLS Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your C_866.NLS issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the C_866.NLS error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing C_866.NLS file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt C_866.NLS files (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "cmd" but DO NOT PRESS "ENTER".
  3. Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
  4. You'll be prompted with a permission dialog box.
  5. In the box, click "YES".
  6. You should have a black screen with a blinking cursor.
  7. In that black screen, type "sfc /scannow" and hit "ENTER".
  8. SFC will begin scanning for C_866.NLS issues and any other system file problems.
  9. Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many C_866.NLS error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the C_866.NLS error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your C_866.NLS File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate C_866.NLS file version. We maintain a comprehensive database of 100% malware-free C_866.NLS files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download C_866.NLS Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy the file into the appropriate directory for your Windows version:

  4. Windows XP: C:\WINDOWS\system32\dllcache\
    Windows XP: C:\Windows\System32\
    Windows Vista: C:\Windows\System32\
    Windows Vista: C:\Windows\SysWOW64\
    Windows 7: C:\Windows\System32\
    Show 4 more directories +
    Windows 7: C:\Windows\SysWOW64\
    Windows 8: C:\Windows\System32\
    Windows 8.1: C:\Windows\System32\
    Windows 10: C:\Windows\System32\
  5. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve C_866.NLS problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.



Download C_866.NLS Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying C_866.NLS to your appropriate Windows system directory. Microsoft typically does not release Windows NLS files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing C_866.NLS and all other NLS files for Windows. An incorrectly installed NLS file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
Windows XP
Windows Vista
Windows 8.1
Windows 8
Windows 7


Files Related to C_866.NLS


NLS Files Related to C_866.NLS

File Name Description Software Program (Version) File Size (bytes) File Location
big5.nls NetLogo Source Code Windows XP 66728 C:\Windows\System32\winevt\Logs\
C_20423.NLS NetLogo Source Code Windows Vista 66082 C:\Windows\System32\DriverStore\FileRepository\...
C_10006.NLS NetLogo Source Code Windows XP 66082 C:\Windows\Panther\UnattendGC\
C_737.NLS NetLogo Source Code Windows 7 66594 C:\Windows\Panther\UnattendGC\
C_10010.NLS NetLogo Source Code Windows 7 66082 C:\Windows\System32\Sysprep\Panther\

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File Name Description Software Program (Version) File Size (bytes) File Location
OneX_v1.xsd XML Schema Definition Windows 8 5957 C:\Windows\L2Schemas\
OneX_v1.xsd XML Schema Definition Windows 10 5957 C:\Windows\L2Schemas\
WWAN_profile_v1.xsd XML Schema Definition Windows 7 6201 C:\Windows\L2Schemas\
WWAN_profile_v1.xsd XML Schema Definition Windows 10 6201 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows 8.1 7627 C:\Windows\L2Schemas\


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