manixware

Temporarily I applied the solution I found in this post and the admin page loads. I am not sure what solves it, but I know it works. Hence marking the post as [resolved]

http://ww.wp.xz.cn/support/topic/admin-suddenly-becomes-page-not-found?replies=2#post-1936933

I do not have a db backup that I know of to be before the upgrade done. However there are a few backups I see.

Further investigations on the admin.php reveals this

I added echo “HEllo World” statements in between lines of codes to trap at which point I get the 404 error.

It turns out that these lines in admin.php have something to do with it. If I insert the check after this if statement, it gives me a 404, before that is fine.

Can some one help me what could be going wrong or being referred to in these lines for the admin module to give a 404 error when I try to login with administrator profile user IDs

if ( current_user_can( 'manage_options' ) )
	@ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', '256M' ) );

Help appreciated.

Regards

Hi,

Going through earlier posts on this forum, I have already done all of these steps.

The twentyone theme is active and is also reflected in the relevant parameters in the wp_options db.

The plugins folder is empty as well as the active plugins reset as in the link in your post with the necessary wp_options update.

A manual upgrade.php displays “Your WordPress database is already up-to-date!”

I am also adding echo statements at various points in scripts to check for path and script execution :

1) Echo the ABSPATH variable in wp-config.php. Correctly reflects my blog path correctly.

2) Adding echo statements at various points in admin.php and access the wp-admin page to check if the comments show up. So far it looks good, but there is some time to go.

Also looking for a primer on how to manually edit, add wp_capabilities add on to “edit_users” to existing author and editors option.

Appreciate help, and would like to fix this install manually using as much help as I an get short of having to backup the posts and comments db and doing a a scratch install. This is helping me explore the software like never before .

Please give me as many advanced trouble shooting steps as well to close this.