Description: Public Key Infrastructure (PKI) troubleshooting refers to the systematic process of diagnosing and resolving issues that may arise in the operation of a PKI. This infrastructure is essential for managing digital identities and securing electronic communications. PKI utilizes a combination of hardware, software, policies, and procedures to create, manage, distribute, use, store, and revoke digital certificates. Issues in a PKI can include failures in certificate issuance, validation problems, errors in certificate server configuration, or difficulties in integrating with various applications that require authentication. Solving these problems is crucial, as a poorly configured or ineffective PKI can compromise the security of digital transactions and trust in the systems that rely on it. To address these issues, diagnostic tools, security audits, and resolution procedures are employed to ensure that the infrastructure operates optimally and securely. The ability to troubleshoot a PKI not only enhances operational efficiency but also reinforces user trust in the system, which is fundamental in an increasingly complex and threatening digital environment.