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Grammarly Outage History

Every past Grammarly outage tracked by IsDown, with detection times, duration, and resolution details.

There were 143 Grammarly outages since January 2019. The 29 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major May 15, 2026

May 2026: Some Grammarly and Superhuman users may be unable to log in

Detected May 15, 2026 12:33 PM EDT · Resolved May 15, 2026 12:48 PM EDT · Duration 15 minutes

Grammarly and Superhuman experienced a service disruption that prevented users from logging in or resetting their passwords for 15 minutes. The incident affected the login system and was classified as a major outage. The issue was resolved after implementing a fix and monitoring the results.

Minor May 7, 2026

May 2026: PDF reports may not be available in the Grammarly Editor

Detected May 7, 2026 3:30 AM EDT · Resolved May 7, 2026 4:31 AM EDT · Duration about 1 hour

Grammarly experienced an issue where users could not generate or download PDF reports in the Online Editor. The problem affected the PDF report functionality specifically within the Grammarly Editor interface. The issue was identified and resolved within 1 hour through implementation of a fix.

Minor April 28, 2026

April 2026: Generative AI features may not work as expected in Grammarly for Windows

Detected Apr 28, 2026 10:15 AM EDT · Resolved Apr 28, 2026 11:41 AM EDT · Duration about 1 hour

Grammarly for Windows experienced an issue where generative AI features were not working properly, with users encountering an "No api version specified in query params" error message. The problem affected the AI-powered writing assistance features within the Windows application. The issue was resolved after 1.4 hours, with the error message expected to disappear within minutes of the fix.

Minor April 10, 2026

April 2026: Document Creation, Upload, and Opening Failing in Grammarly Editor

Detected Apr 10, 2026 2:42 PM EDT · Resolved Apr 10, 2026 6:40 PM EDT · Duration about 4 hours

Grammarly's Online Editor experienced a 4-hour outage where users could not create new documents, with the "New doc" button becoming unresponsive and document upload functionality failing. Users also reported that Grammarly Pro features were not working, the browser extension icon was not appearing, and non-English language support was unavailable. The issue was identified, fixed, and fully resolved after monitoring confirmed the solution was effective.

Major March 27, 2026

March 2026: The Grammarly Editor is not working as expected

Detected Mar 27, 2026 2:14 PM EDT · Resolved Mar 27, 2026 2:34 PM EDT · Duration 20 minutes

Grammarly experienced a service interruption that caused the Online Editor to be slow, unresponsive, or completely non-functional, with users reporting the app was not working and having trouble connecting to the service. The incident lasted 20 minutes before a fix was implemented and monitored. The issue was fully resolved after the fix proved successful.

Major March 9, 2026

March 2026: Increased latency across Grammarly product offerings

Detected Mar 9, 2026 12:52 PM EDT · Resolved Mar 9, 2026 4:10 PM EDT · Duration about 3 hours

Grammarly experienced a major service disruption lasting 3.3 hours that caused increased latency and intermittent functionality across all product offerings, including browser extensions, mobile apps, desktop applications, and core features like writing suggestions and plagiarism detection. Users reported being unable to log in, receiving "Service unavailable" error messages, and experiencing complete service outages across desktop and web applications. The issue was resolved after engineers implemented a fix and monitored the system for stability.