Once i faced the problem i googled and found some topics about the problem.
- https://wordpress.org/support/topic/redirect-loop-after-update-wordpress-441
- https://wordpress.org/support/topic/err_too_many_redirects-12
Result of the discussion I found solutions which might help you in same cases.
If you still haven't figured out how to skip the loop - add "index.php" in address bar after "youdomain.com/wp-admin/" ( In result you will get "http://www.yourdomain.com/wp-admin/index.php" ) . It will allow you to access normally wordpress admin page without loop.
Solutions
Method 1
Check general settings ( settings -> general ). And make sure your addresses are same ( make them lowercase ).Method 2
Go to Permalinks settings ( settings -> permalinks ) and change to plain.Method 3 ( My situation )
None of first methods worked for me ( Method 1 was correct for me, and method 2 - i didn't wanted to change permalinks ). So i have checked code what is happening there... and noticed that index.php isn't loading on wp-admin/ ( which should.. ). So I have checked ".htaccess" file in dir ( and in root dir later ). And I found old code in .htaccess which ruined login process.I have removed everything but wordpress comment surounded code, saved and wuallia... everything worked.
Let me know if it worked for you. Thanks for comment <3 p="">
