ARTICLE
Fix the Error Cookies are Blocked due to Unexpected Output
Have you ever encountered the frustrating error message of "Cookies are Blocked due to Unexpected Output" on your WordPress website? This common problem can prevent you from logging…
Founder
Building WordPress infrastructure tools since 2015
About René Hermenau
I'm René Hermenau, founder of WP STAGING. I've been developing WordPress infrastructure software since 2013, building WP STAGING since 2015, and publishing code on GitHub since 2011.
WP STAGING started as a developer project to solve a problem I kept running into during client work: cloning and migrating WordPress sites safely without breaking serialized data, file paths, media references, or database relationships.
Today, WP STAGING is built and maintained by a team of more than 10 people. The free plugin is used on 100,000+ active WordPress installations, and WP STAGING Pro powers backup, migration, staging, and deployment workflows for agencies, hosting providers, ecommerce stores, and professional WordPress teams.
I'm still hands-on with the codebase, architecture, and technical direction of the product. Much of my work focuses on reliable database exports, memory-efficient processing on large WordPress sites, safe restore workflows, staging-to-production deployments, and reducing the risk of partially written files or database tables during migrations.
On this author page, you'll find technical articles, documentation, and product guides I have written, reviewed, or helped shape with the WP STAGING team.
When you touch code, leave it 10% better than before and write a test.
If you're stuck on a WP STAGING question, start with the documentation. If you hit a bug, file it on GitHub. Our team reads everything that lands there.
Areas of expertise
WordPress backups and restore workflows
WordPress staging sites and cloning
WordPress migrations and site transfers
WordPress database structure and serialized data
Remote Sync and server-to-server WordPress transfers
WP STAGING CLI and local Docker-based WordPress development
Plugin architecture, large-site performance, and safe deployment workflows
At a glance
Role: Founder of WP STAGING
Focus: WordPress backups, staging, migrations, database handling, plugin architecture, and deployment safety
Experience: Developing WordPress infrastructure software since 2013 and building WP STAGING since 2015
Code: github.com/rene-hermenau
ARTICLE
Have you ever encountered the frustrating error message of "Cookies are Blocked due to Unexpected Output" on your WordPress website? This common problem can prevent you from logging…
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JavaScript is a popular programming language used in website development. It is used to make web pages interactive and dynamic. However, when writing JavaScript code, errors can occur.…
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Did you try to update PHP to version 7.4, or 8.0. or 8.1 and your website goes down with an http error 500 and the error message "Uncaught…
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TL;DR: WP Staging works with most major WordPress hosting providers — both shared and managed. The verified list below includes known per-host gotchas and a separate incompatible-host list…
Clone, stage, and back up WordPress sites in seconds. Built and maintained by Rene Hermenau and team.