git-check-ignore.exe is the Windows executable behind Git’s git check-ignore command. It tells you which .gitignore or other exclude rule matches a pathname. A copy installed with an official, current Git for Windows distribution is normally expected, but the filename alone does not prove that an unfamiliar copy is safe.
Use git check-ignore rather than double-clicking the executable. The troubleshooting sequence below verifies the installation, identifies the matching rule, handles tracked files correctly, and repairs missing or broken Git components without downloading a standalone executable from an untrusted site.
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What git-check-ignore.exe does
Git’s official manual describes git check-ignore as “Debug gitignore / exclude files.” The command accepts one or more pathnames, or reads pathnames from standard input, and reports whether Git excludes them. It is a diagnostic command: it explains the rule that affects a path; it does not edit your ignore files.
On Windows, Git for Windows supplies the command as git-check-ignore.exe. In normal use you invoke the subcommand through Git Bash, PowerShell, Command Prompt, a script, or an IDE integration:
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git check-ignore -v -- pathtofile.txtGit locates the executable internally when you type git check-ignore. There is rarely a reason to launch git-check-ignore.exe directly. Direct launching also makes it easier to omit Git’s repository context or pass arguments incorrectly.
By default, Git does not report tracked files. A tracked file is already in the index, so ordinary ignore rules do not determine whether it appears in status output. Add --no-index when you want to test the ignore rules against a path that is already tracked.
Is git-check-ignore.exe safe?
A copy inside the Git for Windows installation is expected. A copy found in a temporary folder, a downloads folder, or an unrelated application directory needs provenance checks before you run it. The name can be copied by malware; it is not an authentication mechanism.
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- Find the Git command that your shell is using. In Command Prompt, run
where.exe git. In PowerShell, runGet-Command git | Format-List Source,CommandType. - Open the reported Git installation directory in File Explorer and locate the associated executable. If several Git installations exist, note which one appears first in
PATH. - Right-click the file, choose Properties, and inspect the Digital Signatures tab when it is present. Check that the signer is the expected Git for Windows publisher and that Windows reports a valid signature.
- Use the file’s Details tab to record its product name, file version, and modified date. Compare those details with a known-good installation of the same Git for Windows release.
A valid signature supports the file’s origin, but it does not make an obsolete Git release safe from every historical vulnerability. Keep the whole Git distribution maintained rather than replacing one file in isolation.
Understand the relevant Git for Windows advisories
Git for Windows has published advisories for particular releases and bundled components. One high-severity installer issue affected versions through 2.37.0 and was patched in 2.37.1. A separate Windows gitk issue affected versions through 2.39.1 and was patched in 2.39.2. Those notices concern the distribution or a component of it; they do not establish that the normal git check-ignore command is malware. Check the project’s current security and advisory information when deciding whether an installed release is supported.
What to do with a suspicious copy
- Do not run an executable merely because its filename is correct.
- Scan the file with your installed security software and review any detection details.
- Compare its path, signature, file version, and, where your organization maintains them, hashes against a verified Git for Windows installation.
- If the file is quarantined or replaced, obtain Git again from the official project distribution and reinstall the complete package. Do not download a lone replacement EXE from a random “DLL” or software-download site.
First checks before fixing an error
Confirm that Git is installed and identify the version
Open a new Command Prompt, PowerShell window, or Git Bash session and run:
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git --versionA version string confirms that the git command is reachable. If Windows says that git is not recognized, the problem is installation or PATH, not an ignore rule. If the command works in Git Bash but not in PowerShell or Command Prompt, those shells are using different environment settings or different Git installations.
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Record which executable is selected
Use where.exe git or Get-Command git to detect duplicate installations. An old copy earlier in PATH can make an apparently repaired installation seem unchanged. Close and reopen terminals after changing PATH; existing processes retain their old environment.
Fix “git-check-ignore.exe is not recognized”
The usual correction is to invoke the subcommand, not the filename:
git check-ignore -v -- pathtofileIf git itself is not recognized, repair the Git installation or its command-directory entry in PATH.
Repair the Windows PATH entry
- Open Settings and go to System > About > Advanced system settings.
- Select Environment Variables.
- Under your user variables or system variables, select Path, choose Edit, and add the command directory belonging to the verified Git for Windows installation. A standard installation commonly has a
Gitcmddirectory, but use the directory created by your own installation. - Move the verified entry ahead of obsolete Git entries if multiple versions are installed, then accept the dialogs.
- Open a new terminal and run
git --versionandwhere.exe gitagain.
On a managed computer, an administrator or security policy may control PATH. In that case, ask for the approved Git installation rather than adding an unverified executable yourself.
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Fix “the system cannot find the file”
This message means that Windows cannot open the executable that the selected Git installation expects. Check whether the Git directory still exists and whether security software removed or quarantined a file.
- Open your security product’s quarantine or protection history and look for a Git-related event. Do not restore a file solely on the basis of its name; verify its path and signature first.
- Run
where.exe gitand check each returned installation. Remove stalePATHentries only after confirming that no required tool depends on them. - If the installation is incomplete, download the current official Git for Windows installer and reinstall the complete distribution. Choose the same architecture and an installation scope appropriate for your account.
- Restart the terminal and repeat
git --version, then testgit check-ignoreinside a repository.
Do not copy git-check-ignore.exe from another computer. Git commands rely on the matching distribution and bundled libraries; a lone file can create a different missing-component error or execute code from an untrusted source.
Fix an immediate crash or a missing-DLL message
An immediate crash or a missing DLL normally indicates a damaged, incomplete, or mismatched Git for Windows installation. It is not evidence that the ignore pattern itself is malformed.
- Close Git Bash, IDE terminals, scripts, and other programs that may have Git files open.
- Use Apps > Installed apps in Windows Settings to locate Git for Windows. If the installer offers a repair option, use it; otherwise uninstall the damaged distribution and install a current official release.
- Reboot if Windows reports that a file is locked, then complete the repair or reinstall.
- Open a new shell and run
git --version. Test the command from that shell before reconnecting an IDE, service, or automation job.
Keep repository folders separate from the program installation. Reinstalling Git should not be used as a substitute for backing up uncommitted work or documenting custom configuration. Before a major change, you can record configuration origins with:
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Use verbose mode first
From the repository’s top-level directory, run:
git check-ignore -v -- pathtofile.txtThe verbose result identifies the exclude source, the line number, the pattern that matched, and the pathname. The source is commonly a .gitignore file, the repository’s .git/info/exclude, or a global excludes file configured through Git. Open the named file and line rather than guessing which ignore file is active.
A pattern beginning with ! is a negation. It reverses an earlier exclusion when Git can reach the path, so the final matching pattern may explain why a seemingly broad ignore rule does not apply.
Interpret no output and exit codes
With default output, no printed line means that no ignore pattern matched. The command’s documented exit statuses are:
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| Exit status | Meaning | What to do |
|---|---|---|
0 |
At least one supplied path is ignored. | Use -v to identify the source, line, and pattern. |
1 |
No supplied path is ignored. | Inspect other causes of the behavior, such as the file being tracked or a different repository being active. |
128 |
Fatal error. | Read the error text, confirm the working directory and repository, and correct the command or installation. |
To make nonmatches explicit while using verbose output, add --non-matching:
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If a file is already tracked, the ordinary check can produce no result even when a pattern would match an untracked file at the same path. Use:
git check-ignore -v --no-index -- pathtofile.txtThis option asks Git to evaluate the ignore rules without treating the index as the deciding factor. It does not untrack the file and does not alter the repository.
Check many paths safely
For a list of paths, feed them through standard input:
git check-ignore --stdinFor scripts that must preserve unusual filenames, use NUL-delimited input and output with -z:
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Understand which exclude file wins
Git can obtain patterns from several places:
- Per-directory
.gitignorefiles in the working tree. - The repository-specific
.git/info/excludefile. - A global excludes file named by the
core.excludesFileconfiguration setting.
Rules in a deeper directory can affect paths below that directory. Within a given source, later matching patterns take precedence. A negation pattern can restore a path after an earlier exclusion, but Git cannot re-include a file if one of its parent directories is excluded: Git must be able to descend through the parent to discover the file.
To see whether a global excludes file is configured, run:
git config --get core.excludesFileIf the command prints a path, open that file and inspect the relevant pattern. Do not delete a global rule merely to solve one repository’s problem; change the repository’s .gitignore when the rule belongs to the project, or use a more specific pattern where appropriate.
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Correct an unexpected ignore result
Change the reported pattern
- Run
git check-ignore -v -- pathtofileand note the exact source and line. - Open that source in a text editor and decide whether the pattern is too broad, in the wrong directory, or intentionally excluding the path.
- Narrow a broad pattern, remove it, or add a carefully placed negation pattern such as
!important.logwhere the project’s policy requires the file. - Save the file and run the same verbose command again.
Use forward slashes in patterns even on Windows when following Git’s pattern syntax. Quote a command-line pathname containing spaces; do not add Windows drive-letter syntax to a pattern unless the pattern is actually intended for that repository-relative name.
Decide whether the file should be tracked
Changing an ignore rule does not remove a file that is already tracked. If the goal is to stop tracking the file while leaving it on disk, review the consequence with your team and then use:
git rm --cached -- pathtofileFor a directory, the analogous operation is git rm -r --cached -- directory. Commit the index change only after checking git status and confirming that the file will remain locally but is no longer part of the repository. If a file is intentionally ignored but must be added once, git add -f -- pathtofile overrides the rule for that add operation; it does not change the ignore file.
Preserve repository configuration during a repair
Git repositories and Git’s program files are separate. A reinstall should target the damaged Git for Windows distribution, not your project directories. Before uninstalling, save any custom settings or credential-helper choices that your organization requires:
git config --list --show-originAfter reinstalling, confirm the selected executable with where.exe git, verify the version with git --version, and run a read-only diagnostic such as git status before changing any ignore rule. If several versions remain installed, remove stale PATH entries or place the approved version first.
Quick Recap
Choose the least risky remedy
| Situation | Best first action | Why | Configuration impact |
|---|---|---|---|
| The command works, but a file is unexpectedly ignored. | Run git check-ignore -v, then edit the reported rule. |
It identifies the actual source instead of guessing. | Only the selected exclude file changes. |
| The file is tracked and the check appears blank. | Repeat with --no-index. |
It tests patterns independently of the index. | No repository data changes. |
git is not recognized. |
Verify installation and repair PATH, or reinstall Git for Windows. |
The shell cannot locate Git. | Environment settings or the program installation changes; repository files do not. |
| A DLL is missing or the executable crashes. | Repair or reinstall the complete, maintained Git distribution. | Matching bundled components are restored together. | Record configuration first if the installation is heavily customized. |
| The executable is in an unexpected directory or has a questionable signature. | Stop running it, scan it, and compare it with a verified official installation. | Provenance is uncertain. | Replacing one file is riskier than reinstalling the complete package. |
Windows troubleshooting checklist
- Run
git --versionin the same shell where the failure occurs. - Use
where.exe gitorGet-Command gitto detect duplicate installations. - Prefer
git check-ignoreover launching the EXE directly. - Add
-vto identify the matching source file, line, pattern, and pathname. - Add
--no-indexwhen diagnosing a tracked file. - Inspect
.gitignore,.git/info/exclude, and the configured global excludes file. - Remember that exit codes
0,1, and128mean ignored, not ignored, and fatal error. - For missing or damaged files, repair or reinstall Git for Windows from its official distribution rather than downloading a single EXE.
- Verify the executable’s path, signature, version, and source before running an unfamiliar copy.
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