Suddenly this error appeared: “A problem is preventing Window from accurately checking the license for this computer. Error Code : 0×80090006″.

I have no idea why.

According to others what you can do one the followin:

• Log into safe mode and re-register a couple of dlls:
  regsvr32 regwizc.dll
  regsvr32 licdll.dll
• Fix C drive association by using regedit32:
  See KB914232
• Reinstall or repair.

For only the third worked.

You can backup files by using Safe mode.

Remember,  backup your data often.

Later edit:

You should verify your XP license or for viruses/rootkits or, more general, malware.
You can see here how much increased the number of searches for 0×80090006 in February: Link to google insight.

After you have filled the database name, user and pass nothing happens, the site wont go further to install the pages, but you have this kind of error in your apache error.log:

Call to undefined function user_access() in /var/www/html/.../includes/theme.inc

The solution is to download drupal directly on the server or to archive the files and upload them to the server as a single file.

This worked for me, hope this will help you.

Recently I wanted to enable https on a opensuse 10.2 server. After generating certificates using easy-rsa from openvpn package, and installing them in apache’s config I got an 12263 error in firefox.

Searching logs didn’t help: only messages about “Invalid method in request \x16\x03\x01“.

Googling for about 30-40 minutes didn’t help but i have found the following link:

http://en.opensuse.org/Apache_Howto_SSL

where, at the end of the page says:

to check your vhost setup, use "httpd2 -S -DSSL"

Cause: client speaks HTTPS, server speaks HTTP. If that happens to be port 443, it means that the server is listening on the port but not with SSL.

I went in apache’s config from sysconfig (/etc/sysconfig/apache2) and I have added “SSL” like below:

APACHE_SERVER_FLAGS="SSL"

and it worked .