Quick Answer
grammarly.exe is safe. It's Grammarly's desktop agent that powers real-time grammar, spelling, and style suggestions across supported apps and browsers. It runs in the background to assist with writing.
Is it a Virus?
✔ NO - Safe
Must be in C:\Program Files\Grammarly\Grammarly.exe or C:\Program Files (x86)\Grammarly\Grammarly.exe
Warning
Multiple Grammarly components may run
Grammarly uses a background agent and browser helpers to provide real-time suggestions
Can I Disable?
✔ YES
Close Grammarly when not needed or disable startup via Task Manager or Grammarly settings
What is Grammarly.exe?
grammarly.exe is the Windows desktop component behind Grammarly’s writing assistant. It integrates with supported apps (like Word and browser extensions) to deliver real-time grammar, spelling, punctuation, and style suggestions as you type. It runs in the background, analyzes your input, and syncs with your Grammarly account to provide consistent improvements across programs.
Grammarly uses a lightweight local agent to analyze text from supported apps, sending content to its cloud service for analysis and returning suggestions. The client checks operate in a sandbox to limit access and protect privacy while you type.
Quick Fact: Grammarly introduced its desktop agent to provide cross-app grammar checks, extending beyond the browser extension.
Types of Grammarly Processes
- Desktop Agent: Core Grammarly.exe service that coordinates checks across apps
- Background Synth: Background components handling text capture and API communication
- Browser Helper: Grammarly extension processes in Chrome/Edge/Firefox for live suggestions
- Office Integrations: Office add-ins that connect to Grammarly for Word/Outlook
Is grammarly.exe Safe?
Yes, grammarly.exe is safe when it's the legitimate file from Grammarly, downloaded from Grammarly’s official sources or bundled with the application.
Is grammarly.exe a Virus or Malware?
The real grammarly.exe is NOT a virus. However, malware masquerading as Grammarly.exe can exist; always verify the file location and signature.
How to Tell if grammarly.exe is Legitimate or Malware
- File Location:: Must be in C:\Program Files\Grammarly\Grammarly.exe or C:\Program Files (x86)\Grammarly\Grammarly.exe. Any grammarly.exe elsewhere is suspicious.
- Digital Signature:: Right-click the file in its folder → Properties → Digital Signatures. Should show Grammarly, Inc.
- Resource Usage:: Normal usage is 1-7% CPU per process and 60-180 MB memory. Extremely high usage when not actively using Grammarly is suspicious.
- Behavior:: Grammarly.exe should run when Grammarly components are active (e.g., a browser tab with Grammarly) and not be silently active when the application is closed.
Red Flags: If grammarly.exe is in an unusual folder (like Temp or AppData), runs when Grammarly isn’t open, lacks a valid digital signature, or uses resources continuously, scan with antivirus software. Be wary of similarly named files.
Why Is grammarly.exe Running on My PC?
grammarly.exe runs to power Grammarly’s cross-app grammar checking and real-time suggestions across supported editors, browsers, and Office components.
Reasons it's running:
- Active Writing in Supported Apps: You are actively typing or editing in Grammarly-supported apps (Docs, Word, emails); the agent provides real-time suggestions.
- Browser Extension Activity: Grammarly extension components run to surface suggestions while you type in web pages.
- Background Sync and Preferences: Grammarly syncs your preferences and documents to the cloud to improve accuracy and consistency across devices.
- Office and Desktop Integrations: Office add-ins and desktop integrations communicate with the Grammarly service to provide checks in Word/Outlook and other editors.
- Startup and Background Services: Grammarly may start background services to monitor clipboard input and prepare suggestions when you log in.
Can I Disable or Remove grammarly.exe?
Yes, you can disable grammarly.exe. It's safe to close Grammarly when not in use, and you can uninstall it completely if you prefer not to use Grammarly.
How to Stop grammarly.exe
- End Individual Components: In Grammarly, turn off browser extensions and disable Office add-ins to stop related processes
- Close Fontional Windows: Close all Grammarly-enabled editors; the desktop agent will reduce activity
- End Background Tasks: Open Task Manager (Ctrl+Shift+Esc), locate Grammarly-related processes, and End Task
- Disable Startup: Task Manager → Startup tab → Disable Grammarly or Grammarly-related services
- Stop Background Apps: Grammarly settings → General → Turn off ‘Continue running in background’
How to Uninstall Grammarly
- ✔ Windows Settings → Apps → Apps & Features → Grammarly → Uninstall
- ✔ Control Panel → Programs → Uninstall a program → Grammarly → Uninstall
- ✔ Restart your PC and remove any remaining Grammarly shortcuts or services
Common Problems: High CPU or Memory Usage
If grammarly.exe is consuming excessive resources:
Common Causes & Solutions
- Too Many Editors or Documents Open: Close unused editors or use Grammarly via browser extensions selectively to reduce checks
- Resource-Heavy Extensions: Disable unnecessary Grammarly-enabled browser extensions via chrome://extensions or edge://extensions
- Office Add-In Conflicts: Disable or repair the Office Grammarly add-in if it interferes with Word/Outlook performance
- Outdated Grammarly Version: Update Grammarly to the latest version from Grammarly’s official site or app
- Background Sync: Temporarily pause synchronization in Grammarly settings to test resource usage
- Antivirus/Firewall Interference: Add Grammarly.exe to allowed apps list; ensure the firewall isn’t blocking Grammarly services
Quick Fixes:
1. Quick Fixes:
2. 1. Open Grammarly Task Manager and identify high-usage components
3. Close unnecessary editors or browser tabs
4. Disable unneeded Grammarly extensions (chrome://extensions)
5. Update Grammarly to the latest version
6. In Grammarly settings, enable Memory Saver or reduce real-time checks
Frequently Asked Questions
Is grammarly.exe a virus?
No, the legitimate grammarly.exe from Grammarly is not a virus. Verify the file is located in C:\Program Files\Grammarly\Grammarly.exe or C:\Program Files (x86)\Grammarly\Grammarly.exe and has a valid digital signature from Grammarly, Inc.
Why is grammarly.exe running so much CPU?
High CPU can occur when many editors or tabs are using Grammarly in real-time. Use Chrome/Edge task manager (Shift+Esc) to identify the culprits, close or disable problematic tabs or extensions, and ensure you’re on the latest Grammarly version.
Can I delete grammarly.exe?
Yes, you can uninstall Grammarly through Windows Settings → Apps if you no longer need it. Your data may be removed unless you sync with a Grammarly account. You can reinstall Grammarly later from grammarly.com
Can I disable grammarly.exe?
Yes. You can disable Grammarly features in the Grammarly app, disable browser extensions, or stop startup tasks. This will prevent Grammarly from running in the background.
Why is Grammarly running at startup?
Grammarly may be configured to launch automatically to provide real-time checks. Disable it in Task Manager → Startup tab or via Grammarly settings to stop automatic startup.
How do I reduce Grammarly's memory usage?
Close unused editors/tabs, disable unnecessary extensions, update to the latest Grammarly, and consider enabling Memory Saver in Grammarly settings to minimize memory usage.