Bad request with Acquia Dev Desktop2 overriding installation I use Acquia Dev Desktop2 on Mac for php7.0.
I think that it is the previous version.
I was waiting for the upgrade to use php7.1, but there was no announcement in check for update menu.
I have no choice, so I downloaded it and overwrite install.
The bad request will be displayed on all local sites.
Phpmyadmin of all sites will be displayed correctly.
What is the solution?

What I can think of is using underscores for site addresses.

test_drupal8_mockup1.dd:8083

In order to remove the underscore, I edited vhosts.conf and restarted apache.
'But request' was not improved.
As an alternative solution, I tried to add the following setting setting to httpd.conf.

&lt;IfVersion&gt; = 2.4.25&gt;
 HttpProtocolOptions unsafe
&lt;/ IfVersion&gt;


'Bad request' message is solved.
The reason was that ServerName contained underscores.