Title: red scan error (error HTTP response: 100)
Last modified: August 21, 2016

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# red scan error (error HTTP response: 100)

 *  Resolved [private183](https://wordpress.org/support/users/private183/)
 * (@private183)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/red-scan-error-error-http-response-100/)
 * So i do receive an scan error after the Plugins and Themes are detected.
 * **First error (solved)**
    `[Feb 08 20:13:55:1391883235.843357:1:error] <br />
   <font size='1'><table class='xdebug-error xe-fatal-error' dir='ltr' border='1'
   cellspacing='0' cellpadding='1'> <tr><th align='left' bgcolor='#f57900' colspan
   ="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'
   >( ! )</s`
 * Btw. this error corrupts the “Scan” page (everything below – that is “Docs: …”
   and “Issues” tabs – has/have been moved inside to “Scan Detailed Activity”)
 * Of course i checked FAQ: [Red Error](http://support.wordfence.com/support/solutions/articles/1000011514-i-m-seeing-red-errors-in-the-activity-log-is-this-a),
   [Not completing](http://support.wordfence.com/support/solutions/articles/1000011148-my-wordfence-scan-is-not-completing-what-should-i),
   aren’t of any help cause there is no file referenced or any error indicator given.
   On
    [scan won’t finish](http://support.wordfence.com/support/solutions/articles/1000011129-my-scans-don-t-finish-what-can-i)–
   well i tried to set it to 15 and 24 as 30 is my current limit. [Problematic Plugins](http://support.wordfence.com/support/solutions/articles/1000010328-which-plugins-are-not-compatible-with-or-break)
   are not installed. [Feature not working](http://support.wordfence.com/support/solutions/articles/1000010684-some-feature-in-wordfence-isn-t-working-what-should-i)
   So i have disabled all other plugins. Further i don’t got any other security 
   plugin installed on this wp-install (details see below; .htaccess just has permalinks
   setting). Java Script Console doesn’t show errors, nor does the site show any
   problem. I also checked wordfence’s option to delete tables etc. on deactivation
   and de/reactivted it to reinitiallize all (and have a working scan page till 
   first scan and refresh page).
 * What i first thought of – i read windows server is not officially supported/might
   cause problems, well acually i am testing things out – offline with wampserver
   on win7. That’s where i thought to take a look in the error logs – and found 
   one at php_error.log. Time Exceeded either i tried “15” resp. “24” at option “
   Maximum execution time for each scan stage”. I changed the setting to 120 at 
   wampservers php.ini and that works now.
 * **Second Error (open)**
    `[Feb 09 09:29:39:1391930979.019494:2:error] Scan terminated
   with error: We received an error HTTP response when trying to fetch binary data
   from the Wordfence scanning server: [100]`
 * And this is where i can’t do much anymore as it’s probably not on my side (other
   logs look fine). Ah – forgott above: all tests pass on “Wordfence connectivity
   tester”
 * [https://wordpress.org/plugins/wordfence/](https://wordpress.org/plugins/wordfence/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Mark Maunder](https://wordpress.org/support/users/mmaunder/)
 * (@mmaunder)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/red-scan-error-error-http-response-100/#post-4592978)
 * Hi,
 * Thanks for the detailed report. Looks like you’re getting an HTTP 100 response
   which means “CONTINUE”.
 * I’ve examined the source code for Wordfence and it looks like your machine is
   configured to use Curl, and what’s happening here is you’re getting a non ‘200’
   response which isn’t actually an error. It’s just telling Curl to continue with
   the request.
 * So my guess is that a proxy is sitting between your windows server and our server
   noc1.wordfence.com and is sending you that response for some reason and perhaps
   expecting you to resend the request.
 * I’d recommend either logging a call with your hosting provider and asking them
   about this or if you’re running your own network, check your proxy settings.
 * Regards,
 * Mark.
 *  Thread Starter [private183](https://wordpress.org/support/users/private183/)
 * (@private183)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/red-scan-error-error-http-response-100/#post-4593052)
 * Thank you, for your answer. Well that sound’s as it wouldn’t be too hard to manage.
 * So first i thought to use an vpn (paid one using openvpn) – i mean if i am already
   connected to america either it’s the east instead near washington (tested 2 available
   servers + 2 outside of US so at least 1 connection should have made it moreless
   direct/not routed somewhere “cheaper”) – at least no proxy inbetween vpn should
   interfere? Then i thought of my anti virus that uses a local proxy to check connections.
   Temporary disabling (while still in vpn) also didn’t help.
 * Finally i decided to tracert noc1.wordfence.com – and of ~30 routs just ~12 managed
   to stay in the timelimit, yet i changed it to 500. And no matter from where (
   VPN) i have sent the request – it stopped after “rtr3.te7-5.lw.netriver.net [
   69.46.33.213]”. So, what now?
 *  Plugin Author [Mark Maunder](https://wordpress.org/support/users/mmaunder/)
 * (@mmaunder)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/red-scan-error-error-http-response-100/#post-4593056)
 * Yup, that looks like our default gateway and we filter out traceroute packets,
   so that’s to be expected.
 * Again, looks like it’s a proxy between your server and us and you have to figure
   out where it is.
 * Regards,
 * Mark.

Viewing 3 replies - 1 through 3 (of 3 total)

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## Tags

 * [red](https://wordpress.org/support/topic-tag/red/)
 * [scan](https://wordpress.org/support/topic-tag/scan/)

 * 3 replies
 * 2 participants
 * Last reply from: [Mark Maunder](https://wordpress.org/support/users/mmaunder/)
 * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/red-scan-error-error-http-response-100/#post-4593056)
 * Status: resolved