To delete an Ory cookie, you can use the Ory CLI or API methods. Here are the steps: 1. Using Ory CLI: You can use the

ory delete

command to delete resources. However, the specific command to delete a cookie is not provided in the knowledge sources. You can refer to the [Ory CLI documentation](https://www.ory.sh/docs/cli/ory-delete) for more details. 2. Using Ory API: You can use the

deleteIdentitySessions

method to delete all sessions of an identity. This will effectively delete the session cookie. To perform this operation, you must be authenticated by means of an

oryAccessToken

. You can refer to the [Ory API documentation](https://www.ory.sh/docs/reference/api) for more details. Please note that the session cookie

max-age

is the same as the set session lifespan by default. If

max-age

is set as a part of the

Set-Cookie

header, the browser deletes the cookie when it reaches the age defined in

max-age

. When

max-age

is not set, the browser deletes the cookie when the session ends. The session ends when the set session lifespan expires, or when the browser is shut down by the user. You can refer to the [Ory Session Management documentation](https://www.ory.sh/docs/kratos/session-management/session-lifespan#session-cookie-max-age) for more details.

To delete a cookie from the browser, you can use the logout flow provided by Ory. Here are the steps: 1. For Server-side Browser Applications: You can use the

DELETE

method to log out a user, which will delete the session cookie. Here is an example using `curl`:

bash    curl -X DELETE \          -H "Content-Type: application/json" \          -d '{"session_token":"<session_token>"}' \          https://$<http://PROJECT_SLUG.projects.oryapis.com/self-service/logout/api|PROJECT_SLUG.projects.oryapis.com/self-service/logout/api>

Replace

<session_token>

with the actual session token. You can refer to the [Ory Logout Flow documentation](https://www.ory.sh/docs/kratos/bring-your-own-ui/custom-ui-basic-integration#logout-flow) for more details. 2. For Single Page Applications (SPA): You can call the logout URL using an AJAX request. Here is an example using React:

jsx    import { Configuration, FrontendApi } from "@ory/client"         const frontend = new FrontendApi(        new Configuration({          basePath: "<http://localhost:4000>", // Use your local Ory Tunnel URL          baseOptions: {            withCredentials: true,          },        }),      )         export function Logout() {        const handleLogout = async () => {          try {            // Create a "logout flow" in Ory Identities            const { data: flow } = await frontend.createBrowserLogoutFlow()            // Use the received token to "update" the flow and thus perform the logout            await frontend.updateLogoutFlow({              token: flow.logout_token,            })          } catch (error) {            // The user could not be logged out            // This typically happens if the token does not match the session,            // or is otherwise malformed or missing          }             // Logout was successful        }           return <button onClick={handleLogout}>Logout</button>      }

You can refer to the [Ory User Logout documentation](https://www.ory.sh/docs/kratos/self-service/flows/user-logout#single-page-application-spa) for more details. Please note that these methods will delete the session cookie, effectively logging out the user.

If the

createBrowserLogoutFlow

method is failing, it could be due to several reasons: 1. Invalid Session: The session might be invalid or expired. In this case, you need to create a new session by logging in again. 2. Network Issues: There might be network issues preventing the request from reaching the server. Check your network connection and try again. 3. Server Errors: The server might be experiencing issues. Check the server logs for any error messages. 4. Incorrect Configuration: The configuration for the

FrontendApi

might be incorrect. Ensure that the

basePath

is correct and

withCredentials

is set to

true

. Here is the example code for reference:

jsx import { Configuration, FrontendApi } from "@ory/client"    const frontend = new FrontendApi(     new Configuration({       basePath: "<http://localhost:4000>", // Use your local Ory Tunnel URL       baseOptions: {         withCredentials: true,       },     }),   )    export function Logout() {     const handleLogout = async () => {       try {         // Create a "logout flow" in Ory Identities         const { data: flow } = await frontend.createBrowserLogoutFlow()         // Use the received token to "update" the flow and thus perform the logout         await frontend.updateLogoutFlow({           token: flow.logout_token,         })       } catch (error) {         // The user could not be logged out         // This typically happens if the token does not match the session,         // or is otherwise malformed or missing       }        // Logout was successful     }      return <button onClick={handleLogout}>Logout</button>   }

If the issue persists, you might want to check the [Ory Kratos API Reference](https://www.ory.sh/docs/kratos/reference/api) for more details or reach out to the Ory community for support.