blog as a PART of my site

The guide asks me to create a file index.html and redirect from there.

What guide?

Hi Esmi,

I have edited the question. We meant the installation guide on the WordPress website.
The Famous Five Minutes Installtion Guide, which takes us more than 48 hours now…

The installation guide does not say anything about creating an index.html file…

You are right, sorry, this link says something about it: https://www.thesitewizard.com/gettingstarted/wordpress1.shtml

In the WordPress guide they say nothing abut this problem, so I searched for help somewhere else since we don’t know how to solve it and run the installation script.

So, if the index.html is not the problem: how do I run the installation script (with WordPress in a subfolder)? I have entered the correct URL.

Don’t use that guide. Use https://codex.www.ads-software.com/Installing_WordPress

Yes, we are using that one as well and will continue using that one. Unfortunately, the problem remains that we get a 404 notification even though we have uploaded the WordPress files and entered the correct URL. We have not registered ourselves on forehand (is that maybe the problem?).

All Steps of the wordpress installation guide seem to have worked except for the last one: entering https://dorevanduivenbode.nl/columns/wp-admin/install.php. What to do?

We have not registered ourselves on forehand (is that maybe the problem?).

No. You do not have to register anywhere to install WordPress.

I cannot find any sign of WordPress anywhere on your site. I can only assume you have uploaded the files to the wrong place on your hosting account.

The problem had multiple angles (wrong hostname, wrong password and wrong location from where we uploaded the files). However, after three days of struggling, it now seems to work!

Thank you for your time.