Why do I get a 421 Misdirected Request?

Hi everyone,

I am trying to setup http2 and keep getting this error

Misdirected Request
The client needs a new connection for this request as the requested host name does not match the Server Name Indication (SNI) in use for this connection.

Server version: Apache/2.4.25

I have 2 virtualhost files and one certificate from Let’s Encrypt which includes the subdomain.

Here’s the domain I go there in Chrome, click the link and I get the error mentioned.

This is the beginning of each virtualhost file

<VirtualHost *:443>
        Protocols h2 http/1.1

And here is what shows after clicking the link in the error.log

[Thu Apr 27 00:57:34.168321 2017] [ssl:error] [pid 28824] AH02032: Hostname provided via SNI and hostname provided via HTTP have no compatible SSL setup

I’m new to hosting my own server and will appreciate any help! :)

Show comments

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Accepted Answer


The only difference between the two configurations, other than the sub .vs. domain, is that in the sub you don’t have a directory configuration.


        <Directory /var/www/blog/>
            Options Indexes FollowSymLinks
            AllowOverride All
            Require all granted

So I would add that to the sub-domain as well (modified of course), for example:

        <Directory /var/www/testing/>
            Options Indexes FollowSymLinks
            AllowOverride All
            Require all granted

… then restart Apache.

That being said, from doing a little digging, I stumbled across this –

When multiple vhosts share the same certificate, browsers will reuse an open connection for all those requests. mod_h2 currently only allows requests for the same host the connection was opened with. Some browsers throw then away the existing connection and open a new one. This can heavily impact performance.

So if that still holds true, then that’s the issue right there.

To remedy this, you’d need to generate independent SSL certificates, one for the primary domain and one for the sub-domain, instead of grouping them altogether in one certificate.

So if you’re using the older LetsEncrypt or the newer CertBot, you’d create one certificate passing:

-d -d

and then another, after the above is created, passing:

-d -d

You’d then modify the VirtualHost blocks to match the paths to the certificate and private key, then restart Apache again.

I didn’t really think of that as I primary use NGINX and it does not suffer from this odd limitation from what I’ve experienced (as I’ve grouped numerous sub-domains with a domain in the past).


On Chrome 57.0.2987.98 64-bit (MacOS), the main domain doesn’t present an issue, though since the app sub-domain is access-restricted, the only thing I see is a pop-up requesting authentication.

Checking the main domain on Windows 10 with Chrome 57.0.2987.133 64-bit seems to work as well.

Edit: Just checked on Chrome 58.0.3029.81 64-bit, Windows 10, and still good on my end.

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Featured on Community

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel