I can’t log in to Grammarly for Windows and Mac or it logs me out all the time

As a first step, temporarily switch off your VPN, proxy, antivirus, and firewall software.

If you are not sure you're using a proxy, this article may help: How can I tell if I use a proxy server?

Note: If temporarily switching off your antivirus and firewall software helps, we suggest that you add Grammarly to that software's allowed list to resolve the issue.

If the issue persists, please reinstall Grammarly via a different browser by following the steps below:

1. Right-click the Start button in the lower-left corner of the screen and select Apps and Features in the menu that appears. Click on Grammarly Desktop for Windows and select Uninstall.
2. Open a different browser and download the installation file by following this link. 
3. Once the file is downloaded, click Run in the pop-up menu that appears at the bottom of the screen. Alternatively, locate the file on your computer and click on it. 
4. When the installation is complete, click Log in to existing account and enter your login credentials.

Please follow these steps first to troubleshoot this issue:

1. Quit Grammarly for Mac
   1. Find the Grammarly icon in the system menu bar at the top of your screen.
   2. Click the icon and choose Quit from the menu.
2. Open Terminal

   Terminal is the macOS tool for advanced commands. To open it:

   1. Press Command (⌘) + Spacebar.
   2. Type Terminal and press Enter.
3. Remove saved Grammarly credentials
   1. Copy the four lines below (all at once):

      security delete-generic-password -l 'com.grammarly.ProjectLlama.authToken' || true
      security delete-generic-password -l 'com.grammarly.ProjectLlama.trustedDeviceID' || true
      security delete-generic-password -l 'com.grammarly.ProjectLlama.oauth2Credentials' || true
      security delete-generic-password -l 'com.grammarly.ProjectLlama.fallbackCredentials' || true

   2. Paste them into the Terminal window and press Enter.

      These commands only delete Grammarly’s saved login information — nothing else on your Mac will be changed.

4. Reopen Grammarly for Mac

   Launch Grammarly using one of these methods:

   1. Open Launchpad, search for Grammarly Desktop, and click to open it.
   2. Open Finder → Applications, then double-click Grammarly Desktop.
5. Sign in again

   Try signing in with your Grammarly account. With the old credentials cleared, sign-in should complete successfully.

If the issue persists, please reinstall Grammarly via a different browser by following the steps below:

1. Click the Grammarly icon in the menu bar and select Quit.
2. Open Finder → Applications.
3. Find Grammarly Desktop and move it to Trash (or Bin).

   Note: If you don’t have administrative privileges, in Finder press Command+Shift+G. to locate the app.

4. Open a different browser and download the installer from Grammarly Desktop.
5. Run the downloaded file and follow the on-screen installation instructions.
6. After installation completes, select Log in to existing account and enter your credentials.