Permissions error uploading files to server
October 26th, 2014
Usually /wp-content/uploads/ directory and subdirectories are 755 so you should be able to write, unless there is an issue with the ownership. Your web host will be able to help ensure the ownership and permissions are correctly set on those directories.
NOTE: Don’t set permissions to 777, this may be solve your issue if the problem is the ownership of the directories, but having 777 permissions on your folders is a bad practice and a security risk.