What is Msdia80.dll And Should You Delete It? [SOLVED]

What is Msdia80.dll And Should You Delete It

The Windows operating system possesses many features and software applications compiled together at one place. Msdia80.dll allows the user to comprehend various tasks at merely one location. On top of that, the system also incorporates facilities to update system files from time to time. Here, newly designed applications and new software applications get updated with the latest features allowing better functioning. All of this becomes possible with the introduction of programming languages.

Programming languages comprises a set of instructions which gets performed when the users use any particular features. These are like grammatical instructions incorporated inside a computer to perform various specific tasks. One of the most popular Programming Languages is the C++, an extension of C Language. C++ includes several operators like comparison, arithmetic, and logical operators, which allows creating data types. User can use these data types multiple times.

What is Msdia80.dll And Should You Delete It

Keeping that in mind, msdia80.dll is a system file in the Programming Language C++. The extension DLL stands for Dynamic-link library. DLL helps to smoothly perform various applications simultaneously in one computer without any hindrance. One should not delete DLL as some application might stop running as expected.

What is Msdia80.dll and How Did It Get In My Root Directory?

Now, coming back to the msdia80.dll system file; the file exists as the user installed Microsoft Redistributable package in the computer. The default location of this system file is C drive. Specifically, the correct path is ‘C:\Program Files (x86)\Common Files\microsoft shared\VC’.

The file may not function properly when the default location changes. It is because the operating system, as and when the need arises, will look for the file at the default location. If you find the file in any other drive then probably, you installed some applications or game or software in your computer which placed the msdia80.dll file there.

What Should You Do About The DLL File? Delete It?

As mentioned earlier, deleting DLL system files can hinder the smooth functioning of an application. It is essential to understand that DLL files are simple pieces of data code which are alive to allow the user to perform simultaneous functions. In addition to this, the system file only gets utilized as and when its need arises.

Now, if the msdia80.dll file is present in other drives, then you need to transfer it to the correct location only. It will mostly let Windows know that the file resides at the target location, and the operating system can use it whenever necessary.

How to Fix Msdia80.dll Error

There are two possible solutions to resolve the flaw. Either you can simply transfer the file to the target location or install two Microsoft packages at the same time. Let us briefly look at both the solutions.

Method 1: Relocating The DLL File

Let us start with a simple and quick resolution of the displaced file. You need to relocate the msdia80.dll file from the root directory to default path, the VC folder to the drive along with the operating system. Perform the following steps for the same.

Step 1 – To begin with, go to the file in the present in the root directory. Press Windows Logo Key + E for the same.

Step 2 – File explorer will appear on the screen. Locate the file in the File Explorer and right-click on it. Now click on the ‘Cut‘ option.

Step 3 – Now, you need to go to the default location of the file to place it there. Navigate to the following path:

C:\Program Files (x86)\Common Files\microsoft shared\VC

Step 4 – When you reach the desired location on your computer, right-click on an empty area and select ‘paste.’

Step 5 – Allow the system to paste the file, thereby pressing ‘Continue.’

Step 6 – Simply pasting the file is not enough. Now, you need to register the file at the transferred location to let the operating system know about its existence. For this, you need to open the command prompt using the administrator mode. Press Windows Logo key + R at the same time. Type ‘cmd‘ in the address bar and press Control + Shift + Enter.

Step 7 – Lastly, execute the following command and press Enter:

regsvr32 driver:\Program Files\Common Files\Microsoft Shared\VC\msdia80.dll

That’s it. Once the process is complete, the system file will get registered in the operating system. Restart the computer so that the new settings can take effect and you are good to go.

Method 2: Install Microsoft Visual C++ Packages

The above-mentioned solution can be quite tedious. Instead of going through that entire trouble, one can try installing Microsoft Visual C++ Package in the device. For this, you need to install two packages. The user should have administrative privileges to make changes in the device and internet connection to download the C++ packages. Execute the following steps for the same.

Step 1 – To begin with, open the browser and download search for “Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package ATL Security Update” from Microsoft’s official website.

Step 2 – Before downloading, choose ‘vcredist_x86.exe‘ and ‘vcredist_x64.exe‘ from the checklist and download them to some desired location in your device. Now, install these exe files in your computer using administrator mode (Right-click on the icon and select ‘Run as administrator‘).

Step 3 – Once the installation process is complete, then locate “Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package MFC Security Update” in the package.

Step 4 – From the extended portion, again select ‘vcredist_x86.exe‘ and ‘vcredist_x64.exe‘ from the list. Again, download them over to some desired location. Open the .exe files and install them on your device.

Step 5 – Finally, after installing the above packages, simply restart your computer so that the new changes can take effect and check if the Msdia80.dll problem persists or not.


Hopefully, the above two alternatives resolve the simple flaw in your device. In case, if none of the above solutions works, don’t panic. Just leave the DLL file the root directory itself. As mentioned above, DLL files are just used for orientation by the operating system. Deleting the file might create some problems. So, simply leave the file, and you can continue to operate your computer without any harm.