Dll 39-qmsl-msvc10r.dll 39-

Before attempting fixes, it is crucial to understand why the error occurs. The 39- error relating to qmsl-msvc10r.dll typically stems from one of the following five issues:

Important: Before proceeding, close all flashing or diagnostic tools. Create a system restore point as a precaution.

The search string dll 39-qmsl-msvc10r.dll 39- is almost certainly a copy-paste artifact from a forum, error log, or corrupted display where:

Important: The actual filename does not contain 39- at the beginning or end. You should search for and reference qmsl-msvc10r.dll only. dll 39-qmsl-msvc10r.dll 39-

Some security suites flag Qualcomm DLLs as "potentially unwanted" due to their low-level hardware access. The software may quarantine the file, triggering error 39-.

If the error persists, the application cannot find the DLL even though it exists.

Steps:

Alternative: Use Dependency Walker (depends.com) to open the main executable that throws the error. It will show exactly which dependencies (including qmsl-msvc10r.dll) are missing or mismatched.

If the file exists but Windows cannot find it, manual registration helps.

Steps:

  • Open Command Prompt as Administrator.
  • Navigate to the folder containing the DLL. Example: 
    cd /d "C:\Program Files (x86)\Qualcomm\QPST\bin"
  • Register the DLL: 
    regsvr32 qmsl-msvc10r.dll
  • You should see: "DllRegisterServer succeeded."

    • If registration fails with error 0x80070005, it is a permission issue – run CMD as Administrator again.

    To fix this error, follow these steps in order: