We have www.domainA.com and www.domainB.com (setup described below). All setup seems to run fine, no error messages given, but: if I go to www.domainb.com, I see the standard Joomla installation screens. We install Joomla with the same database settings as on domainA, but we use a different table prefix (domainb_)

Problem:
The installation exits successful, but if you access the webiste, you see the first setup screen again and again...


Here's what we do:

We run an own server.
We use Plesk and have two domains. www.domainA.com as "main" domain, www.domainB.com added in Plesk as alias (so it uses the same directory on the server).
If I access domainB.com I see the content from domainA.com .

If I use the hello.zip from jms2win it crashes with a senseless error message: Unable to create the file /var/www/vhosts/[domainB.com]/httpdocs/symlink_file4c14c72be3f2b.txt
Probably you will need to used the Joomla FTP Layer and the Symbolic Links will be forbidden
... no idea what they want to tell me here... anyway:

We have a normal Joomla installation running on domainA.com
We install module "multisite", successful

We add a new domain: Components -> Multisite -> Manage Sites -> New
SiteID: domainb
Status: confirmed
Owner: -Owners- (no change)
List of domain names: www.domainb.com
Every other field we leave as is

It is added, message:
* The site 'domainb' is deployed.
* - You can now map your new domain (www.domainb.com) to the directory
* '/var/www/vhosts/domainb-com/httpdocs'.
* - When the DNS will be updated with your new domain (perhaps you have to wait 24 hours),
* you will can go to your new domain and Joomla will request you a new installation (as usual).
* - Please use a new db prefix for each site and NEVER use 'jos' as prefix or if you want to keep 'jos' as prefix, create as many databases than you have sites.

Good day... any help? We bought the software but can't get it to work .

If at the end of the installation you come back again in the installation, this simply mean that the joomla installation does NOT succeed.

Perhaps you have received a screen that tell you that Joomla were not able to create or save the configuration file.
In this case, joomla display you the info that you have to save manually into a configuration.php file.
As long as you don't have a configuration.php file created by joomla as long you will received the "install website"

If Joomla can not write the "configuration.php" then this is perhaps du to a permission problem to write in the "deploy directory".
So check the permissions