I’ll introduce how I solved ERR_TOO_MANY_REDIRECTS with Cloudflare + Nginx + WordPress by changing SSL/TLS settings to Full (strict).

Background: `ERR_TOO_MANY_REDIRECTS`

After changing the nameservers from Onamae.com to Cloudflare as described in お名前.com で取得したドメインのネームサーバーを Cloudflare で管理する方法, ERR_TOO_MANY_REDIRECTS started occurring.

Solution: Change Cloudflare SSL/TLS to Full (strict)

Click [SSL/TLS] - [概要] Change the radio button from “フレキシブル” to “フル (厳密)” in [お客様の SSL/TLS 暗号化モード]

English (US) Language Settings

1. Click [SSL/TLS] - [Overview]
2. Change the radio button from [Flexible] to [Full (strict)] in [Your SSL/TLS encryption mode is Flexible]

Japanese Language Settings

1. Click [SSL/TLS] - [概要]
2. Change the radio button from [フレキシブル] to [フル (厳密)] in [お客様の SSL/TLS 暗号化モード フレキシブル]

That’s all about solving ERR_TOO_MANY_REDIRECTS with Cloudflare + Nginx + WordPress. That’s all from the Gemba.