Install Let’s Encrypt with Apache 2.4 on Windows Server 2019

Estimated reading time: 3 min


In this article, we will help you to configure a Let’s Encrypt client on Windows Server 2019 and how you can enable and configure your SSL certificate on your Apache webserver.


  • VPS or Dedicated Server with Windows Server 2019 installed.
  • You must be logged in via Remote Desktop Protocol as an administrative user.
  • Installed Apache 2.4 in C:\Apache24
  • A domain name pointed towards your VPS or Dedicated server. In this tutorial, we will use Replace all occurrences of with your actual domain name.

Step 1: Log in with RDP into Windows Server 2019

Connect to your server with the login credentials which you can find in your client area.

Step 2: Download Let’s Encrypt client

We will use Win-acme for issuing an SSL certificate. Visit the website of Win-acme to download the latest version. Extract the download zip to C:\win-acme

Step 3: Run Win-acme Let’s Encrypt client

Start wacs with administrator permission. If Microsoft Defender SmartScreen is enabled it will ask your permission.

win smartscreen

Click on More info . A new button will appear and click on Run anyway.

run anyway

Win-acme will start


Step 4: Create a batch file

Create the following filename C:\win-acme\Scripts\RestartApache.bat

net stop "Apache2.4" & sc start "Apache2.4"

Step 5: Issue certificate

Enter M in the command prompt en hit enter.

win-acme m

Choose manual input in our situation, it’s option 1. 

Manual-input can be a different number in your setup

win-acme 1

Enter the domain name where you want to issue a certificate. In our article it’s:


It will ask you for a friendly name, we leave it blank. Hit enter to continue.


It will ask how you want to verify that you are the owner of that domain. In our case, is already pointing to our server and is active in Apache. In our setup, we choose option 1 [http-01] Serve verification files on (network) path.

verify domain

Since we have chosen network path it will ask us for a path, in our case its C:\Apache24\htdocs

network path

It will ask you if you want to copy the default web.config before validation. We choose N


It will what type of private key we want. We will choose option 2 RSA key as a private key.


Since we want to use the SSL certificate on our Apache webserver we will choose option 2 PEM encoded files (Apache, nginx, etc.) and hit enter. Once PEM is selected it will ask you where to store those files. In our case it’s C:\Apache24\conf.


We do not want to store it another way and we select option 3 No (additional) store steps and hit enter.


Once the new certificate is saved we do want to perform an extra step and choose for option 3 Start external script or program. It will ask the script path that you want to run after renewal C:\win-acme\Scripts\RestartApache.bat


Enter the following {StoreType} {StorePath} {RenewalId}. Once this is entered it will ask where you want to receive notification and fill in your email address.


It will ask you if you want to open in default application choose for N and accept the terms with Y.


Run the task under a specific user, since it requires a user with administrator permissions.


Step 6: Enable SSL if it’s not enabled yet

If SSL is already enabled for your Apache webserver you can continue to step 7. Open the httpd configuration file C:/Apache24/conf/httpd.conf.  In the httpd.conf file changes the following lines by removing the comment sign #:

Loadmodule ssl_module modules/
Include conf/extra/httpd-default.conf
Include conf/extra/httpd-ssl.conf

Do an Apache configuration file check. Start command prompt with administration permission. Run de following command:

cd C:\Apache24\bin 
httpd.exe -t

The output should give Syntax OK if there is no error in the configuration file.

Step 7: Configure SSL for the newly issued certificate.

Open the httpd-ssl configuration file located here C:/Apache24/conf/extra/httpd-ssl.conf.

Change the SSLCertificateFile:

SSLCertificateFile "${SRVROOT}/conf/server.crt"


SSLCertificateFile "${SRVROOT}/conf/"

Change the SSLCertificateKeyFile :

SSLCertificateKeyFile "${SRVROOT}/conf/server.key"


SSLCertificateKeyFile "${SRVROOT}/conf/"

Change the SSLCipherSuite:

SSLProxyCipherSuite HIGH:MEDIUM:!MD5:!RC4:!3DES



Change SSL protocol

SSLProtocol all -SSLv3
SSLProxyProtocol all -SSLv3


SSLProtocol all -SSLv3 -TLSv1 -TLSv1.1
SSLProxyProtocol all -SSLv3 -TLSv1 -TLSv1.1

Change VirtualHost

#   General setup for the virtual host
DocumentRoot "${SRVROOT}/htdocs"
ServerAdmin [email protected]
ErrorLog "${SRVROOT}/logs/error.log"
TransferLog "${SRVROOT}/logs/access.log"


#   General setup for the virtual host
DocumentRoot "${SRVROOT}/htdocs"
ServerAdmin <[email protected]>
ErrorLog "${SRVROOT}/logs/error.log"
TransferLog "${SRVROOT}/logs/access.log"

Save the changes. Re-check the Apache configuration on the command prompt. Start command prompt with administration permission. Run de following command:

cd C:/Apache24/bin
httpd.exe -t

If everything is OK. Restart Apache webserver via command prompt. Start command prompt with administration permission. Run de following command:

cd C:/Apache24/bin
httpd -k restart

Step 8: Verify that SSL is working

Visit the website on your browser:


In this article, we described how you can install a Let’s Encrypt client a configure Apache webserver on Windows to use the issues SSL certificate.

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    • Ahmet Bas says

      WinAcme will create a renewal task if you followed our article as described in step 6:
      "Run the task under a specific user, since it requires a user with administrator permissions.". Which will perform a restart of the Apache server after a succesfull renewal.

      • Antonio Pereira says

        I must of skipped that test. I see the the restartapache.bat file but its empty. Is there a way i can manually add the entries in the batch file and then I assume i will have to add a windows task scheduler tito run it every 90 days.

  1. Irma yanet says

    Great !!! I configured Apache for Django and all work fine. Only I had to do a change, I removed the comment sign # at the line :
    LoadModule socache_shmcb_module modules/
    and all work excelent.
    You don't forget to add a permit rule in windows firewall, with a port 443.

  2. Sarooj Z says

    You are a star!
    While configuring at end of step 5 I provided invalid credintial and I could not set task to run automatically renew certificates. How can I go back to that step? Appriciate your assistance.

  3. djoeksanovic says

    on what does the win-acme needs to be installed?
    since we install our web application on a joined domain server but does not have internet access, each time now it tells (initial connection failed)

    but can i run it on my client machine (laptop) generate one, and via our fileserver to import it in the web application server?

  4. Nicolas says

    Thanks a lot for this article. It makes me better undestand how to proceed. However, I got an error at the stage of proving the ownership of my domain.

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