File upload stopped by extension.

Does this happen with all image uploads?

Yes… all images!

Have you asked your hosts about this? The problem may be caused by their server security measures.

Host Support said : This seems to be a specific WordPress issue hence please do liaise with WordPress support on this

someone pls help me ??

Have you tried:

– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).

– switching to the Twenty Eleven theme to rule out any theme-specific problems.

– resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.

– re-uploading the wp-admin and wp-includes folders from a fresh download of WordPress.

@esmi i follow your suggestion, but still not work, and my host said, this problem from wordpress itself, but when copy all folder and database and try running in my localhost all working fine..but not in server.. ??