FIX: 'Warning: Page has Expired' In OAM-Protected Site After Clicking Back Button In Browser

Solution:

1. In Access System Console, edit the AccessGate settings for the WebGate.

2. Remove the 'no-cache' values from the CachePragmaHeader and CacheControlHeader fields.

3. Click Save.

 4. Wait for up to 10 minutes for the WebGate to automatically refresh it's configuration or restart the webgate webserver for immediate refresh.

-- Siva Pokuri.