mscorlib.dll

Download mscorlib.dll free for Windows to fix mscorlib.dll missing problem. Currently, we have 11 different versions available and the latest version is 5.1.50918.0.

File Name mscorlib.dll
Latest Version 5.1.50918.0
Company Microsoft Corporation
Description Microsoft Common Language Runtime Class Library

About mscorlib.dll Errors

When you are launching a Windows software, program, or game that requires mscorlib.dll, Windows will check for the .dll file before launching. 

If there are any issues with the mscorlib.dll file, it will throw an error and the software or game won't launch. Here are a few examples of the errors:

  • The program can't start because mscorlib.dll is missing from your computer. Try reinstalling the program to fix this problem.
  • This application failed to start because mscorlib.dll was not found. Re-installing the application may fix this problem.
  • There was a problem starting mscorlib.dll. Insufficient system resources exist to complete the requested service. 
  • There was a problem starting mscorlib.dll. The specified module could not be found. 
  • The file 'mscorlib.dll' could not be loaded or is corrupt. Setup cannot continue.
  • The code execution cannot proceed because mscorlib.dll was not found. Reinstalling the program may fix this problem.
  • mscorlib.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support.

These are some of the most common errors that occur when mscorlib.dll goes missing from your Windows computer. This can also happen if the file is either corrupt or has other issues. 

You have to reinstall the dll file or place the dll file in the software or game folder that actually requires it.

mscorlib.dll Download

We currently have 11 of the mscorlib.dll available for download. The latest version is 5.1.50918.0. 

Note: If there are multiple versions and are unsure about which version to download, always grab the latest version (5.1.50918.0).

Version
Size
Architecture
Company
Description
5.1.50918.0
1.61 MB
64
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 6dcf49f162765b498ddca632e2ca6c5f
SHA1:173a003c1cf01860e8d8bccffdb70a54eccf0e66
Version
Size
Architecture
Company
Description
5.1.40728.0
1.61 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 263b857cf5fbf1ecea707b3e560949db
SHA1:87c783aff7f12fccbfd9b367892a6822d20de8df
Version
Size
Architecture
Company
Description
5.1.30514.0
1.61 MB
64
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 1a7d16ca7434cda8c4bfb3d5740677fb
SHA1:8afd246df5889aa990565b68481c5c630dd6259e
Version
Size
Architecture
Company
Description
5.1.30514.0
1.61 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 1cb16e581e2355fbb86c78cde60ff3e3
SHA1:fabdf6dbf068e1f23038f43d3c999e6646bb79cb
Version
Size
Architecture
Company
Description
4.6.57.0
3.77 MB
32
Mono development team
mscorlib.dll
MD5: 136c767648f6e0433b4fccdbb6efc6b1
SHA1:ba4ec0c60482b3cfd225a72ac5d39114028ef78d
Version
Size
Architecture
Company
Description
4.0.30319.34014
5.06 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 355cca981df1d55235a7491f432b4743
SHA1:b5d03cd0d30e6d9ab027ed4bc0acd54f188456ae
Version
Size
Architecture
Company
Description
4.0.30319.34014
4.97 MB
64
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 88b52fae4fe6b868dac0a2bf1c4fd3d9
SHA1:b8b52e7e349729ca77e0d3f93f722b1bb64a8798
Version
Size
Architecture
Company
Description
2.0.50727.8009
4.34 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 79a6102b74945e419f2465736bcca3b6
SHA1:8ee099575ff7a402650ca5eeeee0fec321024492
Version
Size
Architecture
Company
Description
2.0.50727.8009
4.36 MB
64
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: e712a69a34256292e82aa01bd27e4219
SHA1:4c39f23740b1c48af984db1856b5f9f6900b5c58
Version
Size
Architecture
Company
Description
1.0.3705.6018
1.91 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: 40e234bea48081f08b9579da687ff774
SHA1:2b952fb12140977acddd75affe2c30af84dbb447
Version
Size
Architecture
Company
Description
1.0.3705.288
1.86 MB
32
Microsoft Corporation
Microsoft Common Language Runtime Class Library
MD5: d0a2ffee69dbc20a25bbb62b8131abb2
SHA1:3ef132737ec80ec6245a4c6be53ae2ac8c4adbdc

Read ahead to know more about how to fix the mscorlib.dll errors.

How to Fix mscorlib.dll Errors on Windows?

There are multiple ways to fix the mscorlib.dll errors. 

  • Download the mscorlib.dll from this page and place it in the Windows System folder.
  • Download the mscorlib.dll file from here and place it in the software or game folder that requires it.
  • Re-install the latest version of the game or software.
  • See if there are any latest updates to the software or game and install the same.
  • See if there are any Windows updates available and install the same. 
  • Scan your Windows for virus or malware. Make sure it’s clean and does not have any vulnerabilities.
  • Clean up your registry using a registry cleaner software.

Here are the detailed steps to fix the mscorlib.dll errors.

Method 1: Manually install mscorlib.dll on Windows System Folder and Register the dll.

Note: The steps are slightly different for Windows 32 Bit and 64 Bit. Most modern Windows systems run on 64 Bit architecture. If you are unsure, follow the steps for 64 Bit.

  1. Download the mscorlib.dll from this page to your Windows computer. The file will download as a zip file. Extract it to get the dll file.
  2. Copy the mscorlib.dll file to the Windows System folder. The location of the system directory depends on the DLL file architecture and your OS architecture:
    • For 64-bit Windows, the 64-bit DLL files should be copied to the C:\Windows\System32\ directory and the 32-bit DLL files should be copied to the C:\Windows\SysWOW64\ folder.
    • For 32-bit Windows, the file should be copied to the C:\Windows\System32\ folder.
  3. Next, search for Command Prompt on your computer > Right Click > select Run as administrator.
  4. Execute this command: regsvr32 mscorlib.dll
    • If registering 32-bit DLL on a 64-bit Windows, then enter the following command instead: regsvr32 c:\windows\syswow64\mscorlib.dll
  5. Restart your computer.

Try to relaunch the software or game and see if the issue is fixed. If not, proceed to read the next section.

Method 2: Manually install the mscorlib.dll file on application or game folder

Sometimes, you may need to place the dll file in the folder of the game or application that it is a part of. 

  1. Download the mscorlib.dll file from this page to your Windows system and have it ready. The file will download as a zip file. Extract it to get the dll file.
  2. Quit the software or game that the mscorlib.dll file is part of. Make sure it is not even running in the background.
  3. Copy the mscorlib.dll file and go to the folder where the game or application is installed on your Windows.
  4. Paste the mscorlib.dll.
  5. Reboot your Windows machine.

Try to open the game or application that requires the mscorlib.dll file and see if the issue is fixed.

Method 3: Reinstall or update the game or software that requires mscorlib.dll

  • Make sure you have the latest version of the game or software. If there is an update, download and install the same.
  • Reinstall the game or software and check if the mscorlib.dll errors are resolved.

Method 4: Scan your Windows system for virus and malware

  • Completely scan your Windows machine to see if you have any vulnerabilities such as virus or malware. It is not a good idea to rely on Windows Defender - even though it has gotten quite good over the years, it is definitely not as good as a dedicated Antivirus program.
  • If there is indeed any virus or malware issue, try to clean it up using the Antivirus program. 
  • Try to restore your Windows to an earlier point of time if you have a system restore point.
  • When all else fails, do a fresh reinstall of your Windows operating system.

mscorlib.dll - Frequently Asked Questions

Q. What is the latest version of the mscorlib.dll file?
A. 5.1.50918.0 is the latest version of the mscorlib.dll file available for download.

Q. Where to place the mscorlib.dll file on Windows?
A. You can place the mscorlib.dll file on your Windows System folder. If that does not work, try to place it in the folder of the game or software that requires it.

Q. Which version of the mscorlib.dll file should I download?
A. Unless you are specifically asked to get a particular version, the latest version is always recommended. In this case, it would be 5.1.50918.0.