Show Certificate in Patch My PC Publisher
Applies to: Patch My PC Publisher V3.x
Important
This article has not been updated for Version 3.x. Once it has, this banner will be removed.
The Show Certificate option in Patch My PC (PMPC) Publisher displays detailed information about the code-signing certificate currently configured for use by Publisher.
This view allows you to verify that a valid certificate is selected, confirm its trust status, and ensure it meets the signing requirements of Microsoft WSUS and ConfigMgr.
Show a Certificate
To show a certificate:
Load Publisher.
On the General tab, under the Certificate Management section, click the Show Certificate button. The Certificate Information screen is shown, displaying the information in the table below.
Issuer
The authority that issued the certificate. This may be ConfigMgr, Publisher, or an internal/public Certificate Authority.
Subject
The identity the certificate was issued to.
Effective Date
The date and time from which the certificate is valid.
Expiration Date
The date and time the certificate expires.
Cert Usage
Indicates whether the certificate is valid for code-signing operations, which is required for publishing updates to WSUS and signing ConfigMgr detection method scripts.
Public Key
The cryptographic algorithm and key length used by the certificate (for example, RSA 2048-bit).
Thumbprint
A unique identifier for the certificate, useful for verification and troubleshooting.
Trusted Publisher
Confirms whether the certificate is trusted for publishing updates to WSUS.
Trusted Root Authority
Indicates whether the certificate chain is trusted by the local system and WSUS.
Self Signed
Indicates this is a self-signed certificate.
Validate Trust Chain
Clicking Validate Trust Chain checks whether the certificate and its chain of trust are trusted by the local system.
This is a useful troubleshooting step if the publishing of updates fails due to certificate or trust-related errors.
Troubleshooting Certificates
If you receive an error when you click Show Certificate, use the steps in this section to identify the cause.
No Certificate found in the WSUS Store on this Server
If clicking Show Certificate displays No certificate found in the WSUS store on this server, review PatchMyPC.log for related certificate extraction errors. An entry such as
An error occurred while extracting the certificate from WSUS: C:\WINDOWS\SystemTemp\PMP-1d2xluld\jwpcs1ov.tmp : The request failed with HTTP status 503: Service Unavailable. CertManager 18/04/2026 12:12:54 34 (0x0022)
Failed to extract the certificate from WSUS CertManager 18/04/2026 12:12:54 34 (0x0022)
Verify that the WSUS Application Pool is started in IIS, then retry the action.
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