> ## Documentation Index
> Fetch the complete documentation index at: https://developers.authlete.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Changing Token Duration

> Explanation on how changing token duration settings in Authlete affects access tokens and refresh tokens.

<Info>
  For **Authlete 2.x** documentation, see [2.x version](/v2/configuration-reference/token-lifecycle-policies/changing-token-durations).
</Info>

## Overview

When you update the "token duration" settings on an Authlete service that has already been issuing tokens, Authlete will:

* Retain the original duration settings for tokens issued before the change.
* Apply the new duration settings to tokens issued after the update.

This article explains how the "token duration" settings affect access tokens and refresh tokens.

## Access Tokens

The new duration settings are to be applied on (re)issuing access tokens on token requests with various grant types including refresh token grant.\\

<img src="https://mintcdn.com/authlete/EJDZNZMvOu_9CJHJ/configuration-reference/tokens-and-claims/token-duration-1.png?fit=max&auto=format&n=EJDZNZMvOu_9CJHJ&q=85&s=6d5f6554bde0a9bf412e2b87817950ad" alt="token-duration-1" width="960" height="436" data-path="configuration-reference/tokens-and-claims/token-duration-1.png" />

## Refresh Tokens

The duration change may affect refresh tokens based on "\*\*Refresh Token Rotation
\*\*" settings.

To configure Refresh Tokens settings:

1. Navigate to **Service Settings > Tokens and Claims > Refresh Tokens**

2. Enable your desired Refresh Token Rotation options.

3. Click `Save Changes` to apply the updates.

![changing-token-durations\_1](https://storage.googleapis.com/authlete-website/resources/kb/changing-token-durations/1.png)

### Enable Token Rotation

***

The `Enable Token Rotation `Configuration item controls whether to keep a refresh token valid after its use or invalidate the used refresh token and issue a new one.

* If "**Enable Token Rotation**" is `enabled`

  * The new duration won't be effective until the existing refresh token is expired and reissued.\\
    <img src="https://mintcdn.com/authlete/EJDZNZMvOu_9CJHJ/configuration-reference/tokens-and-claims/token-duration-2.png?fit=max&auto=format&n=EJDZNZMvOu_9CJHJ&q=85&s=5106277b9a4d3921ac52254290944b56" alt="token-duration-2" width="967" height="436" data-path="configuration-reference/tokens-and-claims/token-duration-2.png" />
* If "**Enable Token Rotation**" is `disabled`

  * The new duration is effective for a new refresh token that is to be issued along with a new access token on refresh token grant (using the old refresh token).<img src="https://mintcdn.com/authlete/EJDZNZMvOu_9CJHJ/configuration-reference/tokens-and-claims/token-duration-3.png?fit=max&auto=format&n=EJDZNZMvOu_9CJHJ&q=85&s=15d73e7dd3e0437b040f144ff3a8c0a4" alt="token-duration-3" width="967" height="436" data-path="configuration-reference/tokens-and-claims/token-duration-3.png" />

### Enable Duration Takeover

* If "**Enable Duration Takeover**" is `enabled`
  * The remaining duration of a used refresh token is transferred to the newly issued one. This setting has no effect when Enable Token Rotation is on.

### See Also

[Refresh tokens after being used](/configuration-reference/tokens-and-claims/refresh-tokens-after-being-used)