Set Admin Session Lifetime Magento 2 - Created and developed specially for Magento 2, the Admin functions as a security measure for your online store. The password-protected back office facilitates the administrative work by allowing you to manage orders, catalog, content, and configurations effectively. The Admin times out after 900 seconds, or fifteen minutes of keyboard inactivity by default. If you’re using this Security extension, a warning email will be sent.
However, you can always make adjustments to the lifetime of the session to fit your work style. You can set Admin Session Lifetime in Magento 2 by following these following steps:
Stores > Settings: Configuration.
Advanced > Admin.
Expand the Security section. Then do the following:
Once you have finished setting the ideal length of session lifetime, tap Save Config. Done!
It comes to the end of tutorial: How to set Admin Session Lifetime in Magento 2.
Reference: Magento 2 User guide.
It comes to the end of tutorial: How to reset Admin Session Lifetime in Magento 2.