rename htaccess.txt on mybb resources to .htaccess (dot htaccess)
copy and paste all code that you get to .htaccess
you can edit in notepad
and upload again to your forum
yourforum.com/ .htaccess
Sir I Don't Understand
Please Tell Me Step by Step
What's going first and what rename
first step: what is your forum url?
yourforumdotcom
If you are still having issues please take a look at
this reply.