Website Not Accessible to Bing Crawler

Microsoft Advertising requires your landing page and product URLs be reachable at all times. The Bing crawler cannot load your site, so all offers tied to those URLs are disapproved.

Robots.txt blocking Bingbot/AdIdxBot, server returning 4xx/5xx errors, geographic IP blocking, slow timeouts, expired SSL certificates, or aggressive bot-protection (Cloudflare, PerimeterX) flagging Microsoft's crawler. Repeated inaccessibility (code 39) leads to harder suspensions. Cloaking and login-walls also trigger this.

1. Test product URLs in incognito and from multiple regions
2. Whitelist user-agents Bingbot, adidxbot, MSNBot in robots.txt and firewall
3. Verify SSL certificate is valid and not expired
4. Confirm 200 response codes and remove redirect chains
5. Resubmit feed once site is reachable

• Geo-blocking US traffic from a non-US store
• WAF rules silently dropping crawler IPs