📘 CASE STUDY: Rank Math Sitemap 404 Issue (Real WordPress Example)
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by
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Dec 22, 2025
Introduction
This article explains a real Rank Math sitemap issue faced on a WordPress website (bloomings.in) and how it was resolved without guesswork.
Interestingly, another site (bloomingtutorial.com) using the same SEO plugin worked perfectly. This comparison helped identify the true technical cause.
This case study is useful for:
- WordPress users
- SEO professionals
- LMS / course website owners
- Anyone facing sitemap 404 errors
Problem Overview
Both websites used:
- WordPress
- Rank Math SEO
- Similar hosting environment
Yet:
- bloomingtutorial.com → sitemap worked
- bloomings.in → sitemap returned 404 Not Found
This ruled out Google penalties and SEO plugin bugs.
Symptoms Observed on bloomings.in
The following issues were noticed:
/sitemap_index.xml→ 404/post-sitemap.xml→ 404/page-sitemap.xml→ 404/lesson-sitemap.xml→ 404
But surprisingly:
/course-sitemap.xml→ Working/product-sitemap.xml→ Working
Google Search Console added confusion by showing:
“Sitemap couldn’t be fetched”
while individual sitemaps showed Success.
Key Observation (Turning Point)
Custom post type sitemaps worked, but core WordPress post types failed.
Working:
- Courses (LearnPress)
- Products (WooCommerce)
- Course categories
Not Working:
- Posts
- Pages
- Lessons
- Sitemap index
This distinction revealed the real issue.
Root Cause (Confirmed)
❌ Broken WordPress Core Rewrite Rules
The problem was NOT:
- Rank Math bug
- Google Search Console issue
- Robots.txt blocking
- Redirection conflict
The real cause was:
WordPress permalink and rewrite rules for core post types were broken.
Why Custom Post Types Still Worked
Plugins like:
- LearnPress
- WooCommerce
register their own rewrite rules, so they continued to function even when WordPress core rewrites failed.
The Exact Fix (What Actually Worked)
Step 1: Force Rewrite Rule Regeneration
- Go to Settings → Permalinks
- Select Plain → Save
- Select Post name → Save again
This forces WordPress to rebuild all rewrite rules.
Step 2: Verify Rank Math Sitemap Settings
Ensure these are ON:
- Posts
- Pages
- Lessons
- Include in sitemap
Step 3: Disable Sitemap Cache (Temporary)
- Rank Math → Sitemap Settings
- Disable Cache Sitemaps
This avoids server-level cache conflicts.
Step 4: Confirm Sitemap URLs
After fixing permalinks, these URLs worked:
/sitemap_index.xml/post-sitemap.xml/page-sitemap.xml/lesson-sitemap.xml
Google Search Console Confusion Explained
Why does GSC still show “Sitemap couldn’t be fetched”?
Because Google:
- Tried earlier (when sitemap was broken)
- Cached the error
- Later fetched sub-sitemaps successfully
- Has not refreshed the top-level status yet
This is normal behavior.
Do You Need Redirection?
❌ No — and here’s why:
- Sitemap URL never changed
- Sitemap now loads correctly
- Google discourages redirecting sitemap files
Correct action:
- Remove sitemap from GSC
- Add it again once
- Wait 24–72 hours
Noindex vs Sitemap (Important Concept)
- Noindex → controls visibility in search results
- Sitemap → controls discovery
Rank Math does NOT include Noindex pages in sitemaps by default.
Also:
Noindex does not cause sitemap 404 errors.
404 errors are routing problems, not SEO directives.
Final Verdict
| Question | Answer |
|---|---|
| Is Rank Math broken? | ❌ No |
| Is sitemap accessible now? | ✅ Yes |
| Is Google blocked? | ❌ No |
| Is redirection needed? | ❌ No |
| Is indexing working? | ✅ Yes |
Conclusion
This case study proves an important rule:
If custom post type sitemaps work but posts/pages fail, always check WordPress rewrite rules first.
Once permalinks were rebuilt:
- Sitemaps worked
- Google began reading URLs
- Remaining GSC message became temporary cache noise
This was a technical routing issue, not an SEO failure.
Why do custom post type sitemaps work but posts/pages fail?
Plugins like LearnPress and WooCommerce register their own rewrite rules. The 404 error typically points to a broken WordPress core rewrite rule, which doesn’t affect these custom rules.
Do I need to set up a redirect for my sitemap after fixing it?
No. Since the sitemap URL (e.g., /sitemap_index.xml) has not changed, you should not redirect it. Simply remove and re-submit the sitemap in Google Search Console after confirming it loads.
Does a ‘noindex’ setting cause a sitemap 404 error?
No. A ‘noindex’ directive controls search visibility, while a 404 error is a “not found” routing problem. Rank Math correctly excludes noindex pages from the sitemap without causing 404s.
How to Fix the Rank Math Sitemap 404 Error A step-by-step guide to diagnose and resolve broken WordPress sitemaps by regenerating rewrite rules.
PT15M
Reset Permalink Structure
Navigate to Settings → Permalinks in your WordPress admin panel. First, select the “Plain” option and click “Save Changes.” Then, immediately select your preferred structure (usually “Post name”) and click “Save Changes” again. This process forces WordPress to flush and rebuild its internal rewrite rule database, which is the core fix for the 404 error.
Check Sitemap Inclusion Settings
Go to Rank Math SEO → Sitemap Settings. Ensure that the sitemaps for “Posts,” “Pages,” and “Lessons” (or your affected post types) are toggled ON and set to be included. This confirms the plugin is configured to generate the sitemaps that were failing.
Clear Cached Sitemap Data
Within the Rank Math Sitemap Settings, find and disable the “Cache Sitemaps” option temporarily. Server or plugin-level caching can sometimes serve an old, broken version of the sitemap file even after the underlying issue is fixed. You can re-enable this after confirming the fix works.
Estimated Cost: -1 USD
Supply:
- Your website URL (e.g., bloomings.in)
Tools:
- Access to your WordPress admin dashboard
- Rank Math SEO plugin (free version is sufficient)
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