Renew Self Signed SSL on localhost using XAMPP and Windows

Last year I wrote a post about Setting up SSL on locahost using XAMPP on Windows for multiple host names and the year before Setting up a self-signed SSL certificate for localhost when using XAMPP on Windows, in them I outlined the steps I used to setup SSL for my localhost. This year having done all the hard work I just need to renew the self signed SSL certificates. So following on from my previous post this year I only have a small number of steps to get my websites humming again with renewed certificates.

As I mentioned in my previous post I could have set the expiry to greater than 365 days but I believe it is worth revisting this kind of thing as a reminder of how it is all working.

The 4 Step Process


Step 1 – Edit the Script

In the previous post I created the script to use in C:\xampp\apache and called it makecert_bulk.bat. The only pitfall with this was, during the year I did a PHP upgrade of XAMPP to PHP 8.1 resulting in this folder being replaced. Fortunately, as per Step 1 of my instructions on how to upgrade XAMPP without losing anything I had taken a backup and so I was able to go and fetch my previous script from my backup. Before running the script, check that you still need all the certificates you are creating and that you don’t have any new ones to add.

Step 2 – Create the Certificates

Open a command prompt (eg from the Windows start menu type cmd in Windows search) then enter

cd /D C:\xampp\apache

Assuming you have installed xampp in C:\xampp\apache

Now enter:


Once this has completed successfully you will find all the private keys and certificates created in :

and C:\xampp\apache\conf\ssl.key

Step 3 – Install the Certificates

Go to start menu, type the following and press enter:


Double click “Trusted Root Certification Authorities”. Right click “Certificates”, choose All Tasks ->

Certificate Manager

certificate import wizard

Click Next.

It will ask you to choose the certificate file. Click Browse and choose C:\xampp\apache\conf\ssl.crt

certificate import wizard - cert file step 1

Click Next.

certificate import wizard - step 2 next
Next again,

certificate import wizard - step 3 finish
then Finish.

This will bring you a message. Click Yes.

certificate import wizard - step 4 security warning
Then it should say Import was successful.

certificate import wizard - step 5 successful
Click OK.

Repeat this step to install each of the certificates that you created for your virtual hosts.

Step 4 – Restart Your Computer

Unlike previously there is no more setup required as you have already edited your httd-ssl.conf and httpd-vhosts.conf previously to make your self signed certificates works, so now all you have to do is restart your computer so that it picks up the new certificates in your browser.

In the end…

Hopefully you found this useful and time saving, or at least a reminder of how to setup self signed certificates for XAMPP and Windows.

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