Hello @onofertas,
A 404 Not Found error when connecting Bling ERP to WooCommerce via the REST API usually means the API endpoint cannot be found, not that the API keys are invalid.
Please start by checking the following on the WooCommerce/WordPress side:
- Confirm the REST API endpoint: Bling should be using:
https://your-site.com/wp-json/wc/v3/
Common issues include:
- Missing
/wp-json/ in the URL
- Using the legacy
/wc-api/ endpoint
- Incorrect site URL (http vs https, www vs non-www)
- WordPress installed in a subdirectory
- Test REST API availability: Open this in your browser:
https://your-site.com/wp-json/
If this returns a 404, the WordPress REST API itself is not accessible, which would cause Bling to fail as well.
- Refresh permalinks: Go to WordPress → Settings → Permalinks and click Save Changes to refresh rewrite rules.
- Check security and hosting restrictions: 404 responses are commonly caused by:
- Security plugins or firewalls
- CDN/WAF rules (Cloudflare, hosting firewall)
- Custom
.htaccess rewrite rules
If possible, temporarily disable security plugins and test again.
If the REST API endpoints load correctly in the browser but Bling still cannot connect, the issue is likely related to Bling’s configuration or server-to-server connection, which would be outside WooCommerce support scope. In that case, Bling support or your hosting provider should be able to help further.
Hope this helps clarify where the issue may be coming from.
RESOLVIDO
Fiz esses procedimentos abaixo que mencionou e funcionou, atualizei os links permanentes.
– Teste a disponibilidade da API REST: Abra isso no seu navegador:https://your-site.com/wp-json/
Se isso devolver um 404, a API REST do WordPress em si não está acessível, o que também causaria falha no Bing.
– Atualizar permalinks: Acesse WordPress → Configurações → Permalinks e clique em *Salvar Alterações* para atualizar as regras de reescrita.
Muito obrigado amigo!
Hi @onofertas,
I am really glad to hear that everything is now working as expected and that the steps shared helped you get the connection sorted. It is great to know you were able to move forward smoothly and get things resolved.
If you have a moment, we would truly appreciate it if you could leave a review for WooCommerce and share your experience. Your feedback helps us continue improving and supporting other merchants. You can leave a review here https://ww.wp.xz.cn/support/plugin/woocommerce/reviews/#new-post
Thanks again for taking the time to follow up, and feel free to reach out anytime if you need further help.
