Hello, Due to the increased number of users on our web page, we have to migrate it from Apache to Litespeed. However, there is one problem: we use SetEnv commands within htaccess file in order to set some environment variables, for ex: SetEnv USER user1 This works well in Apache, but not in Litespeed - it has no effect. We have tried lots of other commands using RewriteRules, such as: RewriteRule ^ - [E:USER=user1] RewriteRule . - [E:USER=user1] RewriteRule ^(.*) [E:USER=user1] RewriteRule ^(.*) - [E:USER=user1] ... and so on, but none of them sets the environmental variables. Obviously I do call "RewriteEngine On" before calling RewriteRule commands. I can list all the environmental variables using phpinfo() call, but none of the entries within .htaccess sets any of the variables. I can set these directly within the php code ($_SERVER['USER'] = "user1"; ) and it works fine. I have looked all over the internet and couldn't find a solution that works from the .htaccess. Can you advise please? Thanks!