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How to solve ‘You do not have sufficient permissions to access this page.’ in WordPress

have been running into troubles logging in to WordPress and was kinda frustrated all morning.

Basically each time I use tried to log in, I get:

You do not have sufficient permissions to access this page.

I could not edit the blog, nothing works except the front page. I did a couple of searches at Google but the solutions didn’t seem to work for me.

In the end, I did a new installation of WordPress and scrutinized every damn thing in the users and usermeta table between a database that worked and a database that doesn’t.

Did you change the prefix of your table names in WordPress after the migration?

In my old database, I used ‘wp_’ as my prefix. As I migrated, I decide to use ‘wp3_’ instead of ‘wp_’. Unfortunately, the meta_key values are tied down to:

wp_user_level
wp_capabilities
wp_autosave_draft_ids
I need to update it to

wp3_user_level
wp3_capabilities
wp3_autosave_draft_ids
I wrote an SQL statement to share, just replace ‘prefix_’ with your new WordPress prefix. The following statements go to ‘meta_key’ and does a string replace from ‘wp_’ to ‘prefix_’.

UPDATE `prefix_usermeta` SET `meta_key` = REPLACE( `meta_key` , 'wp_', 'prefix_' );

(Make sure you do backups first! Note that the quotes used for string and field name are different.)

In the options table, there is ‘wp_user_roles’, make sure you get that changed into ‘prefix_user_roles’.

UPDATE `prefix_options` SET `option_name` = 'prefix_user_roles' WHERE `option_name` ='wp_user_roles' AND `blog_id` =0;

(Make sure you do backups first! Note that the quotes used for string and field name are different.)

With everything set, I tried logging in again and it worked. A happy WordPress user once again. I am using WordPress 2.2.2 before the migration and I did not upgrade WordPress during the migration. Hope it helps. (Applies to WordPress 2.3.3 also.)