Title: Scan Stage Failed
Last modified: August 27, 2026
---
# Scan Stage Failed
* [Sea Jay](https://wordpress.org/support/users/jcollier/)
* (@jcollier)
* [1 week, 1 day ago](https://wordpress.org/support/topic/scan-stage-failed-39/)
* We received the following message after installing Wordfence:
**Scan Stage Failed.
A scan stage has failed to start. This is often because the site either cannot
make outbound requests or is blocked from connecting to itself.**
* We followed the instructions here with no luck: [https://www.wordfence.com/help/scan/troubleshooting/#if-your-scans-arent-starting](https://www.wordfence.com/help/scan/troubleshooting/#if-your-scans-arent-starting)
We turned on debug logging and also saw this under Connectivity:**wp_remote_post()
test back to this server failed! Response was:****202 Accepted** **This additional
info may help you diagnose the issue. The response headers we received were:**
* _HTTP/1.1 202 Accepted
Server: nginxDate: Thu, 27 Aug 2026 18:47:06 GMTContent-
Type: text/htmlContent-Length: 224Connection: closeSG-Captcha: challengeX-Robots-
Tag: noindexSet-Cookie: nevercache-b39818=Y;Max-Age=-1Expires: Thu, 01 Jan 1970
00:00:01 GMTCache-Control: no-store,no-cache,max-age=0X-SG-CDN: 1X-CE: us-east4-
t65tX-Proxy-Cache-Info: DT:1Host-Header: 8441280b0c35cbc1147f8ba998a563a7
* Is there something else we can do?
* The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fscan-stage-failed-39%2F%3Foutput_format%3Dmd&locale=en_US)
to see the link]_
Viewing 1 replies (of 1 total)
* Plugin Support [wfmargaret](https://wordpress.org/support/users/wfmargaret/)
* (@wfmargaret)
* [3 days, 7 hours ago](https://wordpress.org/support/topic/scan-stage-failed-39/#post-19008899)
* Hi [@jcollier](https://wordpress.org/support/users/jcollier/),
* Thanks for the detailed output. That was really helpful.
* The response headers show SiteGround’s bot challenge intercepting the request(
SG-Captcha: challenge), with the body redirecting to /.well-known/sgcaptcha/.
So your site’s request to itself gets a CAPTCHA page instead of reaching admin-
ajax.php, which causes a failed loopback. Ask SiteGround to exclude the server
IP from the SG-Captcha challenge, then recheck Connectivity and the scans.
* You can also try “Start all scans remotely” under Wordfence > Tools > Diagnostics
in the Debugging Options at the bottom, though if SG-Captcha is challenging everyone,
our servers will likely run into the same issue.
* Let me know how it goes,
Margaret
Viewing 1 replies (of 1 total)
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* 1 reply
* 2 participants
* Last reply from: [wfmargaret](https://wordpress.org/support/users/wfmargaret/)
* Last activity: [3 days, 7 hours ago](https://wordpress.org/support/topic/scan-stage-failed-39/#post-19008899)
* Status: not resolved