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Import the certificate into the local computer store On the File menu, select Add/Remove snap-in. In the Add/Remove Snap-in dialog box, select Add. In the Add Standalone Snap-in dialog box, select Certificates, and then select Add. In the Certificates snap-in dialog box, select Computer account, and then select Next.

Assign the existing private key to a new certificate Sign in to the computer that issued the certificate request by using an account that has administrative permissions. Select Start, select Run, type mmc, and then select OK. On the File menu, select Add/Remove Snap-in. In the Add/Remove Snap-in dialog box, select Add.

Creating the Certificate Authority's Certificate and Keys Generate a private key for the CA: $ openssl genrsa 2048 > ca-key.pem. Generate the X509 certificate for the CA: $ openssl req -new -x509 -nodes -days 365000 \ -key ca-key.pem \ -out ca-cert.pem.

Open Command Prompt and type mmc and hit Enter to open MMC. Go to File menu, click Add/Remove Snap In, and add the Certificates snap-in for Local Computer. Once added, right-click in the middle window and select All Tasks > Import. Once imported, the certificate should show up under Local Computer and not Current User.

Similar to SSL, the private key is used to apply the digital signature to the software, when someone downloads it, their browser uses the public key to decrypt the signature and authenticate the publisher.

A certificate Open your device's Settings app. Tap Security & privacy More security settings. Encryption & credentials. Tap a certificate. Wi-Fi certificate. Tap Menu . Tap where you saved the certificate. Tap the file. If needed, enter the key store password. ... Enter a name for the certificate. Tap OK.

How to: Installing Self-Signed CA Certificate in Windows Step 1: Open MMC on the machine that you are getting the warning. ... Step 2: Click on File -> Add/Remove Snap-in... Step 3: Click on Certificates -> Add> Step 4: Click on User Account -> Finish.

Open the Local Machine Certificate Store Click Start ? Run, type mmc and select OK. Go to the File menu and select Add/Remove Snap in. Select Certificates from the Add or Remove Snap-ins box and click Add. Select Computer Account and click Next. Select Local Computer and click Finish.

If a browser says that a certificate is untrusted it means that it isn't signed by a trusted root certificate or that it can't link the certificate to a trusted root certificate.

Go to chrome://settings. On the left, click Privacy and security. Click Security. Scroll to Advanced. Click Manage certificates. In the list, find the newly-added CAs.