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Jeffreychees's avatar
Jeffreychees
Iron Contributor
Jul 23, 2024

System Error: nctfmon.exe

I am experiencing a critical issue upon entering safe mode on my computer. A warning message has appeared indicating the following error:

 

ctfmon.exe - Critical System Alert

A stack-based buffer overrun has been detected by the system in this application. This security vulnerability may enable unauthorized control over the application.

 

I am currently running OS version 23H2 Build 22631.3880.

 

Is anyone else facing this recent error scenario?

1 Reply

  • PeterGreen's avatar
    PeterGreen
    Iron Contributor
    Dec 03, 2025

    ctfmon.exe is a process that manages the input method editor (IME) and other input-related features in Windows. It's a legitimate system process, but in some cases, it can cause issues.

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