New Install Issues?

[Paul w2eck]

Have a new Win 11 64 PC and attempted a new install of SDC, got error msg

" System error- the code execution cannot proceed because MSVCP140.dll was not found. Reinstalling the program may fix this problem"

I uninstalled and tried a 2nd install and got the same error msg.

Suggestions on how to fix?

73 Paul w2eck

[Simon S]

This is a classic Windows 10/11 issue, and fortunately the fix is straightforward 👍
The error means that the Microsoft Visual C++ runtime required by SDC is missing.

 Solution (tested and works)

On the new Windows 11 PC, please do the following:

1. Download Microsoft Visual C++ Redistributable (x64)
   Official Microsoft link:
   https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist
2. Install:
• vc_redist.x64.exe
3. After installation:
• Reboot the PC
• Then start (or reinstall) SDC

This will install the missing MSVCP140.dll (and related runtime libraries).

---

 Why this happens

• A fresh Windows 11 installation often does not include the VC++ runtime
• Applications built with newer Visual Studio versions depend on it
• Reinstalling SDC alone will not help until the runtime is installed

73 Simon

---

From: sdc-...@googlegroups.com <sdc-...@googlegroups.com> on behalf of Paul w2eck <eck...@gmail.com>
Sent: Wednesday, January 28, 2026 4:31 PM
To: SDC Software Defined Connectors <sdc-...@googlegroups.com>
Subject: New Install Issues?

 

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[Paul w2eck]

Simon

Followed your instruction - installed  the MS download- rebooted and got the same error msg?

73 Paul w2eck

[Ron WV4P]

Install both versions.. 

To view this discussion visit https://groups.google.com/d/msgid/sdc-ut4lw/4f327238-9c3e-4142-aa58-fa2ad06b19efn%40googlegroups.com.

[Simon S]

Hi Paul,

thanks for the feedback — OK, that helps narrow it down.

If the error persists after installing vc_redist.x64.exe and rebooting, then one of the following is very likely the case:

 Also install the x86 runtime (important)

Even on Windows 11 64-bit, some applications still require the 32-bit (x86) Visual C++ runtime.

Please also install:

• vc_redist.x86.exe
  from the same Microsoft page:
  https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist

After installing both x64 and x86, reboot again and try SDC.

---

 Verify that MSVCP140.dll is actually present

Check if this file exists:

C:\Windows\System32\MSVCP140.dll

(and optionally also)

C:\Windows\SysWOW64\MSVCP140.dll

If it’s missing in both locations, the runtime is not properly installed.

---

Check Windows Defender / SmartScreen

On a new Windows 11 system, Defender or SmartScreen may silently interfere.

Please check:

• Windows Security → Virus & threat protection → Protection history
• Also verify that SmartScreen is not blocking the executable on first run

If needed, temporarily disable SmartScreen just to test, or add SDC to exclusions.

---

Final check

If possible, please confirm:

• Windows 11 version (Home / Pro)
• Is this a brand-new PC with a clean Windows install?

At this point, this is almost certainly a runtime / Windows security issue, not an SDC-specific problem.

Let me know what you find after installing the x86 runtime — that step usually resolves exactly this scenario.

73,
Simon

---

From: sdc-...@googlegroups.com <sdc-...@googlegroups.com> on behalf of Paul w2eck <eck...@gmail.com>

Sent: Wednesday, January 28, 2026 5:40 PM

To: SDC Software Defined Connectors <sdc-...@googlegroups.com>

Subject: Re: New Install Issues?

 

To view this discussion visit https://groups.google.com/d/msgid/sdc-ut4lw/4f327238-9c3e-4142-aa58-fa2ad06b19efn%40googlegroups.com.