You do not have sufficient permissions to access this page

Error : You do not have sufficient permissions to access this page
When try to activate the plugin in wordpress and then some time it shows the error “You do not have sufficient permissions to access this page” then you need to made some changes under that account.
Solution :
Open wp-config.php file  and
Replace the content from
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define(‘AUTH_KEY’, ‘put your unique phrase here’);
define(‘SECURE_AUTH_KEY’, ‘put your unique phrase here’);
define(‘LOGGED_IN_KEY’, ‘put your unique phrase here’);
define(‘NONCE_KEY’, ‘put your unique phrase here’);

===========
To
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define('AUTH_KEY',         'xzjop11ocq4p25xgp4zy3g2c8zpnrvosvpq6zgethmcjs2xfr0dhc8qnwzqaie3s');
define('SECURE_AUTH_KEY',  'slsklt2pnzem3xuqnhxtdqmb6qaofqz1myvuztkynorhijoakocc27vbgmbr6lj3');
define('LOGGED_IN_KEY',    'zsixqmsi1xrfuuyzqxnqxccf5lmdvcozyqho9ut6c8j4yeq2reh07nhjsatzglyx');
define('NONCE_KEY',        'qglsgzmyywgnfgf8svlye2rdlp42aeyh599hkyjcl7bekfw6ouwirxtiabp57mfs');
define('AUTH_SALT',        'wyc0fbiwzkwqljfyngcfx8w7k1wjis8tgpe8ypqzyc88zoy2luyqekpyro689qgl');
define('SECURE_AUTH_SALT', 'aum1i4ubnamlxnq7mwbbzgydlcywre8rb39pp7x5qw7ujsaj5enc6cegictqv6qz');
define('LOGGED_IN_SALT',   'grqghuz8jhct4ytofzfxqyhqn5kfaka5cbi1qoq5hq3gy8vwckflu1afeyv3ls98');
define('NONCE_SALT',       'z5qo3qdimktw0kucvhcepw52zrdpwlile9cmh3ral9orwcvv5vhvmrufnefao2hk');
===========
Save the file  and Done
You can create the new auth code by using following URL
 https://api.wordpress.org/secret-key/1.1/salt/