What to do when Bing de-indexes your site? The fix, step by step
Timeline: how I fixed the Bing de-indexing issue
Jun 21 Discovered that
site: lanxk.comreturned zero results on Bing. Yikes.Around 2 AM on Jun 22 Filed the first appeal. Got an auto-reply from Copilot saying there were SEO issues. Chose to submit the form anyway. Received the system confirmation email.
Jun 22 – Jul 14 Used the waiting time to audit the site in Bing Webmaster Tools. Found and fixed most SEO issues (from 83 errors down to a little over 20).
Jul 14 Filed the second appeal. This time, Copilot didn’t flag SEO issues. Got the auto-reply again.
Jul 22 (about 8 days later) Received the first human response. They said the site was sent to the product review team for further evaluation. They expected the review to take a few weeks.
Aug 19 (about 4 weeks later) Got the second email: good news — the issue was resolved!
Total time From discovery to final resolution: about 2 months From the first appeal to the second appeal: 3 weeks From the second appeal to resolution: about 5 weeks
The process: what actually happened
On Jun 21, I noticed that searching site: lanxk.com on Bing showed no results at all (both the CN and the international versions). Not a fun surprise:
So around 2 AM on Jun 22, I started the appeal process. This time felt a bit different: Copilot popped up first with an automated message saying my site had some SEO issues, like this:
I chose to submit the form anyway and then got an automated confirmation email. 
No news for the next few days, so I dove into Bing Webmaster Tools to see what I could fix on my end.
URL Inspection surfaced several SEO issues:
The Recommendations page showed 83 SEO errors: 
Since I was in the waiting game anyway, I spent some time fixing most of the flagged issues:
After waiting 3 weeks without a response, I submitted another appeal on Jul 14. This time, Copilot didn’t flag any SEO issues, which felt more promising: 
I immediately got another auto-reply, same as the one on Jun 22.
About 8 days later, I finally received the first email from a human. In short: “We’ve reviewed your site and sent it to our product review team for further evaluation. Bingbot will continue to evaluate it against the Bing Webmaster Guidelines to determine whether it should be indexed. The review usually takes a few weeks, depending on your site’s complexity. We’ll email you once it’s done.”
At that point, there wasn’t much left to do but wait. Those weeks were tough — I’d already fixed what I could. Interestingly, Bing kept crawling and indexing my site (the content was in the index); it just didn’t show up in search results.
After another 4 weeks, on Aug 19, the good news finally landed: the issue was resolved.