I have installed Magento 2.3 in my localhost and it's a successfully installed. But When I open an admin URL it comes with blank URL. Also, my homepage comes without Magento default logo. And i am facing another issue on homepage When I clicked on to create an account it redirects successfully but it comes with a blank page.
Please see attached images for better ideas.
I think this small hack will help you. i remebered i had an same issue some time back so may be this one will help you. You have to change some code in Validator.php
. In the Validator.php there is one method(isPathInDirectories) so you have to change the below line
$realPath = $this->fileDriver->getRealPath($path);
to
$realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));
Path : ...vendor\Magento\Framework\View\Element\Template\File\Validator.php