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.