Causes Occurs when Cloudflare cannot contact your origin web server. A network device between Cloudflare and the origin web server doesn’t have a route to the origin’s IP address. Fixes Step 1: Contact NET Support Contact NET to exclude the following common causes at your origin web server: Confirm the…

Causes This error indicates an interrupted connection between Cloudflare and your origin’s Railgun server (rg-listener). Common causes include: Firewall interference Network incidents or packet loss between the Railgun server and Cloudflare Connection Timeouts this Railgun log errors indicate a connection failure between the Railgun Listener and your origin web server:…

Causes Occurs when your origin web server is overloaded Fixes A) If The Error Occurred With NO Cloudflare In The Message Step 1: Contact NET Support Contact NET support to verify if there are any rate limit requests to your origin web server. B) If The Error Occurred With Cloudflare…

Causes Occurs when Cloudflare timed out while contacting the origin web server. Two different timeouts may cause the error depending on when they occur between Cloudflare and the origin web server: Before a connection is established, the origin web server does not return a SYN+ACK to Cloudflare within 15 seconds…

Causes Origin server returns an empty, unknown, or unexpected response to Cloudflare Fixes Step 1: Grey Cloud The DNS Record The quick step is to either grey cloud the DNS record in the Cloudflare DNS app or temporarily pause Cloudflare Step 2: Contact NET Support Contact NET support or your…

Causes Occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain Cloudflare IP addresses. The most common ones are: Offline origin web server application Blocked Cloudflare requests Fixes Step 1: Contact NET Support Contact your site administrator or NET…

Causes Cloudflare is unable to establish contact with your origin web server. Fixes A) From your origin web server Step 1: Ensure Origin Server Responds To Requests Ensure the origin server responds to requests for the hostname and domain within the visitor’s URL that generated the 502 or 504 error…

Cause There is an issue with your origin web server. “Error establishing database connection” is commonly generated. Workaround Step 1 If the HTML page contains “cloudflare” or “cloudflare-nginx”, kindly provide NET at [email protected] with the following information: Your domain name The time and time zone of the 500-error occurrence The…

Causes The user is able to communicate with the server but it is unable to locate the requested file or resource. This error occurs when : a visitor mistypes a URL the file exist in the wrong location on the server, either moved or deleted. server configuration has the incorrect…

Causes the user made a valid request but the server is refusing to serve the request. It usually occurs : when the user that is running the web server process, does not have sufficient permissions to read the file that is being accessed. Fixes Step 1 check the file’s permission…