Thinking of installing multisite on a new site

I just installed my site new with wordpress less than an hr ago and thought I'd go with a multisite instead.

I plan on using wpmu plugins with Divi themes and plugins.

I am reading up on wpmu mutilsite article and came across this statement

If you’re converting your existing site to a Multisite network, you follow the same steps as above with one exception: you won’t be given the option to select subdomains or subdirectories. If your site has been in existence for more than a month, you’ll be forced to use subdomains.

Since it was not explained in details, how will this negatively impact my multisite? I assume I need this subdomains/subdirectories for my potential clients.

Also if this site grows I plan on moving to a different host and also found some of your articles on how to do that.

If I can get answers on these questions and anything else you can help me with before I convert my site it would be appreciated.


  • Luís

    Hi Dave ,

    Hope you're doing well today!

    If you change an existing regular WordPress installation to Multisite, during the Network setup, it can not give you the option to choose "subdomains" or "subdirectories".

    In needs to be done via code, editing the wp-config.php and adding this code if you want to use "subdirectories":

    define( 'SUBDOMAIN_INSTALL', false );

    or to use "subdomains":

    define( 'SUBDOMAIN_INSTALL', true);

    Also, you will need to use the proper .htaccess rules:

    If I understood well your questions, choosing between "subdomains" or "subdirectories" don't have any negative impact on your clients, the choice between "subdomains" or "subdirectories" is entirely yours. I think this article may interest you:

    However, If your website is older than one month, when you change it to Multisite, you can only choose subdomains to prevent conflicts between pages and sites.

    I.E: if you have a site called “blog” (, you can have conflicts with a page using the same URL.

    I hope this information has been helpful. If I can help you in this or other questions, please let me know!

    Cheers, Luís

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