# What invalid\_grant actually means, provider by provider

DevFeed: [What invalid\_grant actually means, provider by provider](<https://devfeed.tech/articles/what-invalid-grant-actually-means-provider-by-provider-16020.md>)

Original publisher: [Read original article](<https://workos.com/blog/invalid-grant-oauth-errors-by-provider>)

Author: WorkOS

Published: 2026-08-27T00:00:00Z

Content type: article

Language: en

Sources: [WorkOS Blog](<https://devfeed.tech/sources/workos-blog.md>)

Topics: [OAuth 2.0](<https://devfeed.tech/topics/oauth2.md>), [Authentication](<https://devfeed.tech/topics/authentication.md>), [Google](<https://devfeed.tech/topics/google.md>), [Microsoft](<https://devfeed.tech/topics/microsoft.md>), [Slack](<https://devfeed.tech/topics/slack.md>)

Tags: [authentication](<https://devfeed.tech/tags/authentication.md>), [bug](<https://devfeed.tech/tags/bug.md>), [oauth](<https://devfeed.tech/tags/oauth.md>), [oauth-2-0](<https://devfeed.tech/tags/oauth-2-0.md>)

## AI overview

This article explains that OAuth 2.0's invalid_grant error covers five specification conditions, while providers use the same error differently. It compares provider-specific meanings for Google, Microsoft, Salesforce, Xero, QuickBooks, and Slack, and explains why recovery depends on provider-specific error details, often with a fallback to full re-authorization.

## Source excerpt

One string, five spec conditions, and a different meaning at every provider. Here is what Google, Microsoft, Salesforce, Xero, QuickBooks, and Slack each mean by it.