How to disable proxy caching with .htaccess

Question

I have a problem where corporate proxy servers serves up the page for different logged in users. I reckon I can solve this issue by disabling proxy caching. This page suggests i

Answer 1

Use:

ExpiresActive On

ExpiresDefault now

Header set Cache-Control "no-cache, no-store, must-revalidate, max-age=0, proxy-revalidate, no-transform"

Header set Pragma "no-cache"