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Check or install root certificate

The HARICA_TLS_RSA_Root_CA_2021 certificate must be available for various network logins (e.g. WiFi) in the certificate store of the respective operating system. It enables your computer to check that you are logging on to the correct server. The root certificate is already installed on most current operating systems.

  • Windows

    1. Press "Windows key + R" and enter certmgr.msc in the search field and select the corresponding entry in the results.
    2. Have a look into Trusted Root Certification Authorities → Certificates.
    3. If you find an entry HARICA TLS RSA Root CA 2021 there, check that "server authentication" or "<all>" is noted in the "Intended purposes" column. If there is no such entry, you must install the certificate individually.

    Installing the certificate

    1. Download the following file:
    HARICA_TLS_RSA_Root_CA_2021.crt
    2. Save it in any folder (e.g. Download, Desktop) and double-click on it. 
    3. A safety warning will appear, click on open and check if the issuer is "HARICA TLS RSA Root CA 2021".
    4. If yes, click on install and follow the Import-Assistant until the message "The import process was successful" appears.
    5. The certificate should now be stored in the Windows certificate store.

  • Linux

    1. Open the file explorer.
    2. Check whether the file "HARICA_TLS_RSA_Root_CA_2021.pem" is stored under the path "/etc/ssl/certs/".
    3. If you find the file, you can start setting up the WiFi. If not, you will need to install the certificate individually.

    Installing the certificate

    1. Download the following file:
    HARICA_TLS_RSA_Root_CA_2021.crt
    2. Save it in a folder of your choice (e.g. Downloads, Desktop).
    3. Open the command line and enter the following command:
    sudo mv "Path of HARICA_TLS_RSA_Root_CA_2021.crt-file".crt /usr/local/share/ca-certificates

    - If the folder does not yet exist, you can create it with the following command:
    sudo mkdir /usr/local/share/ca-certificates

    4. Now you need to install the certificate using this command:
    sudo update-ca-certificates

    5. The root certificate is now located under "/etc/ssl/certs/"

  • Android

    1. Download the following file:
    HARICA_TLS_RSA_Root_CA_2021.crt
    2. Download the certificate and save it in the Downloads folder.
    3. Now open Settings → Security & Privacy → Additional security settings → Encryption & credentials → Install certificate →  (WiFi-) certificate.
    - The menus may differ depending on the device manufacturer or Android version.
    4. Tap on the three-dot menu, then navigate to the Downloads folder and select the certificate
    5. If necessary, enter a name for the certificate e.g. Harica-UMR and tap OK.