WordPress update 4.4.1 redirect loop

There is number of possible way to coming this issue with message “net::ERR_TOO_MANY_REDIRECTS“. I list some of them:

1. File/Folder permission issue
Check and changed the permissions of wp-login.php to 644, if the WordPress login page has this issue.

After this, another redirect loop? So, once again, looking at /wp-admin/index.php, the permissions were 664 rather than 644.

You can check more about Permission Scheme for WordPress(https://codex.wordpress.org/Changing_File_Permissions)

2. Url without www.
You need to check and changed the siteurl and home options (option_name column) in [wp-prefix]_options table from “http://example.com” to “http://www.example.com” if it require.

3. Affected by external plugin use
Please check this by rename your every external plugin folder and rollback if it show up one by one.

4. Regenerate you .htaccess by paste code from Options -> Permalinks
Also make sure everything is in lowercase.

Hope you can find your solution from this.

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