Cloudflare is blocking Bingbot

When I check BingWebmaster and use “Fetch as BingBot” then Bing is able to crawl that particular URL of my site. However, when I use SiteScan tool, then I am getting 4xx error. (SiteScan tool shows where we need on-page SEO improvements and that’s why it is very important that SiteScan tool works.)

Then I tried TechnicalSEO tool to fetch&render and I did the test as follows for Bingbot useragent:

and then found that CloudFlare blocks Bingbot useragent and results into HTTP 403 response

HTTP/2 403 
date: Thu, 06 Aug 2020 01:46:22 GMT
content-type: text/html; charset=UTF-8
set-cookie: __cfduid=d3f73e32abc0f9b1a8717b943883ee1b41596678382; expires=Sat, 05-Sep-20 01:46:22 GMT; path=/;; HttpOnly; SameSite=Lax
cache-control: max-age=15
expires: Thu, 06 Aug 2020 01:46:37 GMT
x-frame-options: SAMEORIGIN
cf-request-id: 04630bbbc4000002c02a114200000001
expect-ct: max-age=604800, report-uri=""
server: cloudflare
cf-ray: 5be51572dbc202c0-SEA
content-encoding: gzip

I have checked posts on CloudFlare Forum on

  1. Bingbot not able to access to my site:
  2. Cloudflare bing bot block: and
  3. Bingbot blocked:

however none of them works.

So what should I do to fix this problem?

Ony Microsoft can send a request as bingbot.

I tried using Bing Webmaster tools and TechnicalSEO tool.
For BingWebmaster ->SiteScan -> I am getting HTTP 4xx error.
For TechnicalSEO tool -> that displays HTTP 403 Forbidden error as mentioned.

Well, the 403 is likely Cloudflare blocking them as they are not Microsoft. As for the other 400 error you should check your server logs. Also check your Cloudflare firewall event log.

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