Everything has been working fine. Then this week a teacher asked me to add a site for her in our multisite setup and I am unable to create any new sites.
I create the site in the Admin Console, everything appears to be fine. Emails are sent to notify that the site has been created, the site shows up in the Admin console but... it is not created on the server. When I look in IIS it is not there (older sites are there), it has not been created and therefore I am receiving a 404 error when trying to access it, its dashboard, etc.
Once again, nothing has changed in the configuration except updating to the latest version. I'm at a loss as to why it would suddenly not create the site. WordPress "thinks" it has created the site but it hasn't & doesn't exist. No permissions have changed, nothing... Any ideas?