How increase attachment upload size 10mb to 100mb or more?

I want to increasing attachment upload size for my forum.

I can upload only 10mb size but I want to upload upto 100mb for big files.

How can I do this?

I contact forum owner or customer area but he says your size only increase from hosting provider.

So @Admin can you help me, to increasing upload size?

No, the 10 MB file size limit (not just upload limit) is the hard limit for free hosting. If your users would like to share larger files through your hosting, please ask them to use a specialized file sharing service for that instead.