You have not provided us with enough information to actually help you. Remember to please help us to help you by reading and following the posting guidelines in this thread: Please read before requesting assistance.File upload size is also limited by your configuration of PHP. Have you checked your file size limitations set in you php.ini? There are a number of ways to do this and none of them are really
related to osTicket. You should consult with your hosting company to
find out if they support custom php.ini files or .htaccess .The basics are you would edit the php.ini and add or change :upload_max_filesize = 10Mpost_max_size = 10Mmemory_limit = 12MGenerally
speaking post_max_size is the limit of everything submitted with post,
so many people chose this to be a multiple of upload_max_filesize to
allow multiple files to be uploaded, but this is not mandatory.If
your host does not allow custom php.ini files you may be able to
achieve the same results by creating or editing your .htaccess file
located in the root osTicket directory.php_value upload_max_filesize 10Mphp_value post_max_size 10Mphp_value memory_limit = 12M
