If you have a backup of the file from a known clean system, you can restore it to the correct folder, but always verify the digital signature:
: Because it relies on Visual C++ 2010, you may need to install the Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package .
If you can specify which software you were using when this error appeared (e.g., "I was trying to flash a Samsung phone with Odin" or "I was using Miracle Box"), I can give you a more targeted fix.
: If you have a backup or a trusted source, ensure the file matches your system architecture (32-bit or 64-bit) [14]. Move the File systems: Place the file in C:\Windows\System32 systems: Place the 64-bit file in C:\Windows\System32 and the 32-bit version in C:\Windows\SysWOW64 Register the DLL : Open Command Prompt (Admin) and type regsvr32 39-qmsl-msvc10r.dll , then press Important Safety Note
This is the most common fix. Since QMSL_MSVC10R.dll was compiled with MSVC10, it requires this specific runtime to function. dll 39-qmsl-msvc10r.dll 39-
Follow these step-by-step troubleshooting methods to restore the file and get your software running again.
Rarely, the 39- prefix might be . In some custom recovery or flashing scripts, 39- could be a generic error code meaning "Device not in download mode" or "Sahara protocol failure" , and the DLL is actually fine.
To fix the issue, it helps to understand what this file actually does:
Type the following command and press : DISM.exe /Online /Cleanup-image /Restorehealth If you have a backup of the file
Install both the and x64 versions if you are on a 64-bit system. Reinstall the Application :
Uninstall your current servicing tool (e.g., Hydra Tool main setup) via the Control Panel.
The file QMSL_MSVC10R.dll is part of the . It is primarily used by specialized mobile software like QFIL (Qualcomm Flash Image Loader) for tasks such as backing up QCN (Qualcomm Calibration Network) data or flashing device firmware. Errors related to this DLL typically occur because the file is missing from the application folder or because required Microsoft Visual C++ Redistributables are not installed. Troubleshooting & Fix Guide
He looked back at the screen. The file was still there, humming quietly in the background. Move the File systems: Place the file in
Since the DLL is part of the MSVC10 library, you must ensure the 2010 redistributable packages are installed on your computer.
Are you seeing this error while trying to open a or during a phone-flashing process? Knowing the context can help find the exact driver you need. How do you fix missing dll files on Windows 11?
When Windows throws an error containing this string, it usually means the operating system is looking for a specific function inside a library that it cannot find. The most frequent causes include:
Reinstalling the specific tool (like QPST or QXDM) often replaces the missing file.
When hunting for a fix, you will find numerous websites offering standalone downloads of 39-qmsl-msvc10r.dll .