Download EmEditor 25.4.2

We’ve just released EmEditor v25.4.2. This update delivers several important fixes and optimizations to keep your experience smooth and stable, so we recommend updating as soon as possible.
- Added support for GPT-5.1 (the ChatAI plug-in is required).
- Fixed occasional malfunctions in AI prompts (the ChatAI plug-in is required).
- Fixed an issue that sometimes caused the status bar’s line/column display to be cut off.
- Fixed a problem in the Large File Controller when using case-insensitive regular-expression filters.
- Fixed an issue where the Keyboard page in settings could show an asterisk—as if it had been modified—even when the defaults were unchanged.
- Fixed unexpected behavior triggered by double-clicking [+] in tree views like the Snippets and CommitList plug-ins.
- Fixed a crash that could occur in the CommitList plug-in when double-clicking a directory in the Commit List pane after comparing commits.
- Fixed a bug where undo could stop working after making a few box selections under low-memory conditions.
- Adjusted the position of the balloon notification when opening EmEditor with a very large file.
- Fixed an issue that made Find in Files extremely slow when symbolic links or junctions were involved.
- Improved performance across multiple areas, including file opening, Find in Files, and horizontal scrolling on very long lines.
If you use the Desktop Installer version, you can select Check for Updates from the Help menu to download the latest version. If this method fails, please download the latest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to get the latest version. The Store App version can be updated through the (Microsoft Store after a few days.