grpconv.exe – What is it, Error & How to Fix it?

  • Bipul 
  • OS

grpconv.exe is a Windows system file and an executable which stands for Windows Progman (This is not a typo) Group Converter. grpconv.exe is a very old system file (dating back to Windows 95/98) and is used to convert Windows 3.1 group files for Windows 95/98. In many computers, there are multiple instances of the same grpconv.exe files in the Windows folder.

group converter

In my PC, there are 4 occurring of grpconv.exe with different file sizes and locations

We will be taking a closer look at this file grpconv.exe with some details and behavior of the film in our system.

File Size & Location

In Windows 10, 8, and 7, it’s located under the C:\Windows\System32 directory, but it may also be located under other folders like C:\Windows\WinSxS\. Usually, the file size of grpconv.exe is 51.5 KB in Windows 10.


File Name:grpconv.exe
File Size:39.5 KB/ 51.5 KB
File Location:C:\Windows\System32



Product Name:Microsoft Windows Operating System
File Description:Windows Progman Group Converter
Published by:Microsoft Corporation
Copyright:Microsoft Corporation

Uses of grpconv.exe

It is an operating system tool that is used to convert groups to folders when you are trying to upgrade your OS.


This is not an always running background process and only works when requested by the system.

Is it safe or a virus?

The file is safe and trustworthy as it is a Windows system file. Unless the file is located somewhere else instead of the System32 folder, you can rest assured that the file is not a virus or malware. This file doesn’t have any digital signature.

However, if the file is located in System32 it may be a fake grpconv.exe and potentially be harmful to your system.

Error Common errors related to grpconv.exe

Application error-

“grpconv.exe is not a valid Win32 application.”

This error shows up when the grpconv.exe file on your PC is corrupted or damaged.

Other issues:

These issues occur when grpconv.exe on your PC is a trojan/malware.

Methods to solve common errors

Scan your system files with SFC

System File Checker (SFC) can scan for a corrupted grpconv.exe and attempt to fix it. As grpconv.exe is a system file, we can expect an SFC scan to work on it.

1. Press WINDOWS + X simultaneously

2. Click on Windows PowerShell (Admin)

Windows Powershell

3. Windows PowerShell will open, now type the following command

sfc /scannow

4. Press the ENTER key to execute the code and run the System File Checker

SFC Scannow powershell in Windows 10

5. Wait for it to finish, then restart your PC.

Update your operating system

Windows update can fix issues in your PC if there is a bug. If a bug is involved, system files like grpconv.exe can cause errors or other issues.

1. Press WINDOWS + I to open the Settings

2. Click on Update & Security


3. Click on Check for updates to check for new software updates available for your system. If there is already an update available, there will be a button saying ‘Download’ or ‘Install’, click on it.

Use antivirus to remove virus

If grpconv.exe on your PC is fake, there are plenty of chances that it could be a virus. Scan your PC using your Antivirus software or use Windows Defender-

1. Search for Windows Security in the start menu

Windows Security Settings

2. Click on Virus & threat protection

3. Click on Scan options

4. Choose the type of scan (We recommend Full Scan) and click Scan Now.

Full scan in Windows 10


If you are still experiencing issues after trying the above methods, try Reinstalling or Resetting your Windows. I hope this article was informative, kindly leave a comment or contact us if you have queries or suggestions.

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Bipul is an undergraduate engineering student, who has used five different Windows releases over 8 years of him being a true PC enthusiast.

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