Yet again a post about permissions! This one is about the self service site management feature that you can enable in the Central Administration page near the Application Management and then right here :
So you enable it and click on "OK" just like the screenshot below :
Next you want to create a site using the 'scsignup.aspx' page and there you get an access denied error and SharePoint wants you to login with a user who has sufficient permissions to perform this action. So I checked the eventlog for any errors and found the following :
The site /sites/<sitename> could not be created. The following exception occured: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).
And then it hit me.. we unchecked the "Self-Service Site Creation permission" in the "User permissions for web application" (see screenshot below at the bottom) :
So I checked it and tada! We could create sites using the Self-Service Site Creation page!
Now this all makes sense ofcourse although I figured that once you enabled it, the permission would be turned on automatically or an error would be raised to inform you that you need to make sure that the permission is set.
Hopes this helpes someone ;)