Unable to access Admin panel of Drupal site at Localhost, migrated from server
This issue might be a variation of the question about "drupal /?q=user is working but /user not working". So verify if you can use an URL containing ?q=user or ?q=admin. If that gets you going, then probably tuning RewriteBase in your .htaccess (as described in the accepted answer of that question) should help.

It might be worth trying to further enhance your .htaccess file, by adding a line after that existing RewriteBase, which looks like so:

RewriteRule . index.php [L]


For more details on the above line, refer to the (accepted) answer in this question on StackOverflow.

Another option for debugging is to retry using another browser. If via that browser you are able to login, then it's probably a cookie problem (in your original browser).

If http redirects to https you might have a module that does this or it might be a rule in .htaccess see if you can comment out the rule in htaccess or disable any relevant module with drush dis MODULENAME.

If none of these suggestions help, then re-edit your question by adding more details about which modifications to your '.htaccess file, httpd.conf, etc' you already tried (and didn't work).