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FAQ – The digital signature of a program files could not be verified

EmEditor checks digital signature of EmEditor executables and DLL files before opening to mitigate for DLL hijacking vulnerability since Version 17.5.

If you open EmEditor on a PC where the Internet connection is unavailable, you might run into an issue such as:

  • A warning dialog box “The digital signature of a program file could not be verified.” appears when you try to launch EmEditor.
  • The digital signature of EmEditor files (such as emeditor.exe and .msi installers) cannot be verified.
  • EmEditor launch becomes slow.

In these cases, please refer to FAQ “Read this first if you are having trouble installing EmEditor” – #20.