# Determine How Often to Prompt Users for Re-Authentication or Multi-Factor Authentication

By default, Okta will utilize session cookies to automatically authenticate users when they are redirected to Okta from EVA. If your organization's use case for EVA necessitates overriding this out-of-the-box behavior, follow these steps to instruct Okta how often users are required to re-authenticate or complete multi-factor authentication when signing in:

* [ ] Log in to Okta
* [ ] Navigate to the Applications page by clicking the "Applications" dropdown menu in the navigation bar on the left side of your window and then clicking the "Applications" dropdown item

<figure><img src="/files/hNTvy0uQkAfDHzAGsUFj" alt=""><figcaption></figcaption></figure>

* [ ] Select the app integration you created for EVA
* [ ] Navigate to the "Sign On Policy" section of the "Sign On" tab of the details view for the application

<figure><img src="/files/Mt2925z7HY3dglCu40QC" alt=""><figcaption></figcaption></figure>

* [ ] Add a new application sign-on rule by clicking the  "Add Rule" button

<figure><img src="/files/5dJuvV15oxJXOvtJXH4G" alt=""><figcaption></figcaption></figure>

* [ ] If you want to determine how often Okta prompts users to re-authenticate themselves when redirected from EVA, select the "Prompt for re-authentication" option and enter a timeout duration appropriate for your use case

<figure><img src="/files/8nhMZ2bQ6fH23hLGvFnz" alt=""><figcaption></figcaption></figure>

* [ ] If you want to determine how often Okta prompts users to complete multi-factor authentication when redirected from EVA, select the "Prompt for factor" option and choose an interval appropriate for your use case

<figure><img src="/files/d5PMbIS7sksyWPOLmcMh" alt=""><figcaption></figcaption></figure>

* [ ] Configure the other settings for your application sign-on rule and click the "Save" button to create your rule


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