How to fix “NT Base API Client” errors

The Windows NT Base API Client, also known as “KernelBase”, is a shared library for “kernel32”. Approximately 27000 system files are associated with KernelBase, making it a very important system file.

Fixing the KernelBase error

Seeing error messages such as “KernelBase.dll not found” and seeing the Blue Screen of Death are indicative of a KernelBase error and warrant repair as soon as possible. Here are some ways to do that.

Manually “fix” KernelBase.dll

Problems related to the Windows NT Base API client may be caused by file corruption. One way to fix this is to “reinstall” KernelBase.dll, ie download the file again to replace the old one. You simply need to know where you are. It is usually located in the “C:/Windows/System32” folder if you have a 32-bit system, or in the “C:/Windows/SysWOW64” folder if you have a 64-bit system. You also need to have a clean KernelBase.dll file.

However, it is not recommended that you simply download the file from the Internet. While there are many sites that offer free “dll” downloads, there are also many fake sites that can provide you with a malicious file and thus infect your system.

Run a full system scan for malicious files

The KernelBase error can be caused by a previous attack by malicious files (eg malware, spyware, viruses), leaving it corrupted. Your system may also be under attack right now; you might have obtained a malicious file masquerading as KernelBase.dll. It may be running right now and damaging your system. Scan your system to find out if there are any malicious files currently present on your system and remove them.

To make sure your computer is free from harmful files, regular scanning is recommended. Make sure you have a quality antivirus program installed and make sure it is turned on at all times.

Extra caution is also recommended in the use of the Internet. Do not download from untrustworthy sources or from suspicious emails. Many harmful files are spread in this way. Also, avoid visiting high-risk sites like porn and illegal download sites.

Use Windows File Checker

A very important and powerful tool included in Windows is the System File Checker. It scans the system for damaged or corrupted files and has the ability to restore them. In case it finds a damaged system file, it will use the DLL cache to restore that file. So if your DLL cache is also compromised, you will need your original Windows drive to recover them.

Using System File Checker (Works on Windows XP above):

1) Click “Start” on the screen or the Windows key on your keyboard (if you have one).

2) Type “cmd” in the search box without pressing the Enter key.

3) Hold down the “ctrl+shift” key. A dialog box will appear and ask for your permission. Click “Yes”. Don’t skip this step. This step will allow your system to enter administrator mode, and you will need to be in administrator mode for the following steps to work.

4) The Command Prompt window should appear.

5) Type “sfc /scannow” and press enter.

6) Windows File Checker will now start scanning your system. The process may take some time depending on how large your system space is. Please, be patient.

7) Follow the instructions on the screen if you find any corrupted or problematic files.

Restore your computer to a previous state using System Restore

Changing system settings or installing new programs can cause system file inconsistencies. Fortunately, Windows has a System Restore feature, which allows you to return your system files to their previous state. The good thing about System Restore is that it doesn’t affect other important files like your documents and photos. Only system files will be rolled back.

Windows periodically creates “restore points” automatically, usually when you install a new program. You can also create restore points yourself, which is really useful if you’re the type who loves to tinker with system features.

Using System Restore (works for Windows XP above)

1. Click the Start button on the screen or the Windows key on your keyboard (if you have one).
2. Type “System Restore” in the search box and press Enter.
3. Wait for System Restore to initialize. It may take a few minutes.
4. Follow the instructions on the screen.
5. Restore your system.

Here, we have provided several methods to fix the KernelBase error. Any of these methods can fix the error successfully, but getting a dll repair tool might also help you solve the problem efficiently.