If you are using Cloudflare and you receive this error "ERR_TOO_MANY_REDIRECTS" when you try to access your WordPress admin area.
Cloudflare has a redirection feature in their SSL/TLS which conflicts with your current SSL Redirection on your website. That's why you receive the message (ERR_TOO_MANY_REDIRECTS).
Please make the following changes to your Cloudflare account to remove this conflict.
- Login to your Cloudflare account.
- Navigate to SSL/TLS from the left-side menu.
- Make sure that the (Full) option is selected instead of (Flexible).
Then, your WordPress admin area will open normally.