Articles about certificates | UserComp.com

Adding Private key SSL Cert to IIS: CSR and File Instructions

Resolve SSL handshake errors in IIS by importing an issued certificate and binding it to the original private key.

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Docker and Certificates: Not Creating SSL Certificates Inside Docker

Resolve SSL certificate loss in Docker by generating certificates on the host and mounting them into containers via volumes for persistence.

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Re-using Hardware USB Tokens for New Code Signing Certificates upon Expiration

Reuse existing USB tokens for new code signing certificates to save costs and maintain security by generating a CSR from the stored private key.

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Modern Browsers Encountering SSL Errors: Certificate Installation Issue in Windows

Resolve SSL certificate errors in modern browsers on Windows by manually installing missing intermediate or root certificates into the system store.

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Edge - Why is OpenDNS issuing the certificate for bing.com?

Resolve Microsoft Edge security warnings when OpenDNS intercepts SSL traffic by installing the OpenDNS root certificate in your trusted store.

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Resolve Expired Mozilla Add-on Certificate in Firefox (running till March 2025) by Replacing Older Addon Versions

Fix expired Mozilla add-on certificate errors in Firefox by disabling signature verification or installing updated extension versions.

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How to Avoid Requesting Instructions with OpenSSL Config File in Tech Support

Resolve interactive OpenSSL prompts during CSR generation by using the -subj flag or a configuration file for automated, consistent certificate requests.

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CA Bind: Self-signed Certificates not Working in Intranet

Resolve intranet self-signed certificate failures by ensuring Subject Alternative Names match hostnames and installing the certificate in client Trusted Root stores.

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Installing certadminspecialuser via Windows Admin Center

Resolve confusion about installing certadminspecialuser by configuring proper certificate administration group memberships in Active Directory or local groups.

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Certifying Multiple DNS Names: What Else is Required for Correct Verification?

Resolve Let's Encrypt certificate rejection by verifying ownership for every domain in the Subject Alternative Names list.

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Windows Certificate Authority: How to Manage Certificates in Windows

Configure Windows Certificate Authority to issue, manage, and revoke certificates for secure enterprise network authentication.

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Fixing Remote Desktop Certificate Errors with Self-Signed Certificates

Resolve Remote Desktop certificate warnings by importing the server's self-signed certificate into the client's Trusted Root Certification Authorities store.

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Combining Root CA, Client Certificate and Private Key into a Single File

Resolve MySQL mutual TLS handshake failures caused by incorrectly combining the client certificate, private key, and CA bundle into a single file.

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EAP-TLS SSL Handshake Failure: Unknown CA (Fatal, Level: 1)

Resolve EAP-TLS Unknown CA errors by ensuring the server presents the full certificate chain and the client trusts the issuing root CA.

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Force Certbot to Overwrite Certificate Even if Time Remains

Use the --force-renewal flag to bypass Certbot's expiration checks and immediately overwrite existing SSL certificates.

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Exporting CRT File Certificates using OpenSSL in Windows DOS Prompt

Convert Windows DER format certificates to standard PEM format using OpenSSL in the Windows DOS prompt.

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Understanding X.509 Subject Field Encodings: OrganizationName

Resolve X.509 certificate validation failures caused by incorrect OrganizationName string encodings like TeletexString or UTF8String in strict parsers.

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Getting SSL/TLS Certificates for SSL Enabled Services

Explains how to generate SSL/TLS keys and CSRs, select certificate types, and obtain certificates from authorities to secure web services.

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Resolving Local FQDN Certificate Warning During Second Exchange 2019 Installation

Fixes local FQDN certificate warnings during second Exchange 2019 installation by correcting DNS records and updating the certificate SAN.

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