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Safely Fix Mscorlib.dll Error

Introduction of Mscorlib.dll

Mscorlib.dll is a component of Windows-based Microsoft Common Language Runtime Class Library where is crucial for the performance of Windows Operating System. It belongs to the system function .NET Compact Framework. Its position is in C:/ WINNT/ Microsoft.NET/ Framework/. This file has been digitally signed from Microsoft Windows Component Publisher – Microsoft Timestamping Service. Essential system files cannot be loaded due to a series of incorrect modification. The Mscorlib.dll Error can bring a series of computer problems to users. It will cause inconvenience like frozen computer screen due to the loading of useless advertisements, annoying system security warning pops- up and obscure system error messages. Also, the system frequently shuts down automatically without notification when Blue Screen of Death errors comes up. And you will find the network speed is much slower than ever before. Last, when it occurs, the removal of fake security tool is blocked by system error messages, Windows Firewall cannot be activated anymore and Windows Defender cannot be updated as well.

Causes of Mscorlib.dll Error

System problems described as follows will cause the Mscorlib.dll error.
1.Missing or damaged program files of Microsoft Common Language Runtime Class Library.
2.Missing, damaged or incompatible copy of mscorlib.dll.
3. Missing or corrupt registry files of Microsoft Common Language Runtime Class Library.
4. Mscorlib.dll being invalid due to spyware or redirect virus.
5. Microsoft Common Language Runtime Class Library being corrupted or overwritten by perilous computer infection
6. Unexpected damage on crucial system files which are associated with system startup items.
7. Overloaded Windows registry full of obsolete registry files and components.
8. Incorrect modification on settings and configuration of system network settings and system security configuration.

Note: If you want to check if there are registry errors on the computer, we suggest you to download a professional registry cleaner tool – RegCure to perform a scan of the system quickly.


How to Deal with Mscorlib.dll Error?


Enable Windows Auto Update.
For Windows 8 Users
Step One: From Start, switch to Apps screen. Find out
Windows System
on the right, click Control Panel.

Step Two: Click Settings, click Change PC settings, click Update and recovery.
Step Three: Click Choose how updates get installed.

Step Four: From Important updates, select the option Give me recommended updates the same way I receive important updates, click Apply.
For Windows 7 and Windows Vista
Step One: Click on Start menu, right-click on Computer, click Properties.
From System, select the Windows Update
Step Two: Click Change Settings.
Step Three: Under Automatic Updates, verify that Install updates automatic (recommended) is selected. If not, select it.
Step Four: Select the frequency and time at which to install updates, and click OK.

For Windows XP
Step One: Click on Start menu, right-click My Computer, and then enable Properties.
Step Two: From the System Properties box, select Automatic Updates.
Step Three: Under Automatic Updates, verify that Automatic (recommended) is selected. If not, select it.
Step Four: Select the time that you would like for the installation to take place, and click OK.


Repair registry errors.

Windows Registry is a database which keeps a list of the DLL file locations for your computer. If there are many invalid registry entries due to the incorrect installation of programs or virus infections on your PC, a lot of computer errors, including Mscorlib.dll Error error, may appear. To repair those obsolete registry entries, you can choose to use a third-party registry fix tool to solve this problem.

To repair the Windows registry, we highly recommend you to use RegCure – a reputable registry repair tool to help fix the registry errors.

RegCure is a smart registry cleaner tool which is created with advanced techniques which enable to detect all registry related issues on your PC rapidly and repair them completely. By using it, you no longer need to worry about making mistakes when modifying the system registry keys.

Download and save RegCure on your computer.


Run the file and install the software on your PC.
Click Start Scan button to perform a full scan of your system.
After all problems have been found, click Next button and fix all the errors.


Warning: When you are facing physxcudart_20.dll error that is caused by damaged registry entries, you’d better not modify the system registry manually unless you are a computer expert. If any registry key is deleted by mistake, your system may even stop running. Therefore, using RegCure is the best choice for you to fix the Windows registry.