502 Bad gateway while logging to the WP admin panel

[strojanowski97]

Hi,

while logging in to the WordPress admin panel (after entering login and password) I got error “502 Bad gateway” with error on the host side. I also checked the host server and looks that it is online and there is no major issues. For front website there are no issues in availability.

I have SSL certificate issued via Cloudfire and with paused Cloudflare on the site HTTPS protocol doesn’s work. I have a “flexible” mode turned on.

Thanks for help.

[neiljay]

@strojanowski97

I got error “502 Bad gateway” with error on the host side. I also checked the host server and looks that it is online and there is no major issues.

If not major, wouldn’t it be minor? The error indicates an issue with the origin server. There could be some changes made, affecting the site. Best, I suggest you to read the following Tutorial for the detailed fix:

Community Tip - Fixing Error 502 / 504: Bad Gateway

Error Try the suggestions in this Community Tip to help you fix Error 502 / Error 504: Bad Gateway / Gateway Timeout. Background The 502 / 504 errors are quite similar. Generally, a HTTP 502 / 504 errors occurs because your origin server (e.g., your web host) is returning this code to us, and Cloudflare returns this code in turn to your visitors. They are caused by a problem connecting to an upstream server - meaning your server is trying to initiate a process and this fails to work as expect…

@strojanowski97

have SSL certificate issued via Cloudfire and with paused Cloudflare on the site HTTPS protocol doesn’s work.

This indicates the configuration issue at the host. You need to fix that first before onboarding to Cloudflare.

@strojanowski97

I have a “flexible” mode turned on.

This ain’t the best option as suggested by the ExpertReply . The best one is Full Strict. Read the Tutorial

Why you should choose Full Strict, and only Full Strict

Unencrypted & unverified connections Imagine you open Paypal and suddenly get that warning [image] Would you continue? Probably not. For decades leaders in IT security have advocated that people upgrade their sites from unencrypted HTTP to secure HTTPS. And for a reason, everything you send via an HTTP connection is sent in plain text and can be intercepted at any point between you and the server. Equally, you’d probably not proceed if you got such a warning, right? [image] That’s when th…

Why flexible SSL mode is not the best choice

Flexible The connection between your visitor and Cloudflare is secured, but the connection between Cloudflare and your server is not. You will not need a certificate on your server for this mode. This option is NOT RECOMMENDED. Flexible makes your site only partially secure - it encrypts the connection between the visitor and Cloudflare - this means they see the in their browser and the site leaves the impression that it’s secure! However, the connection between Cloudflare and your orig…

[strojanowski97]

Thanks neiljay for the help.

It concerns me because the 502 error occurs only when I try to log in. Instead of the view of WP admin panel after log in attempt, I got the error. Besides that, site works fine.

I have only flexible mode on because my host provider doesn’t allow me to install cerificate on the server in my billing plan. Also that is why I use only SSL certificate issued on Cloudflare. I’m going to change provider in the future so I will change to full strict. Thanks for tips.

I have contacted my host provider and I got information that from their side everything is fine. I am not sure whether there may be a problem with HTTPS protocol during log in to the panel. I have HTTPS rewrites in the WP settings turned on as well.

I am really suprised because I didn’t find similar problem on the web.

[thom.georgel]

Hi there, got the exact same issue here.

Turned out that I had some warning triggered by wordpress, shown in my error log file.
After fixing them, I could access the dashboard again.

Hope this helps someone