Cant download driver certificate

I do not want to force the acceptance of unsigned drivers during boot , and running in test mode for what will be an extended period of testing is unappealing. Does anyone have any ideas? Sunday, May 22, AM. AdrianEdmonds wrote:. Proposed as answer by Gary G. Sunday, May 22, PM. Monday, May 23, PM. Little 1. Like Tim said, pay the bucks, get the certificate and sign it.

Gary G. Little 0. Thanks for the answers guys. Note: If you can't run the utility due to permission issues, skip to the next section to manually complete the remaining steps. The utility takes a few minutes to add the PDF printer.

Once it's done, the following confirmation dialog box is displayed. Click OK to close the dialog box. Also, close the Printer Ports and the Print Management dialog boxes. Now, you can manually install the PDF printer. Legal Notices Online Privacy Policy. Adobe Acrobat User Guide. Select an article: Select an article:. Applies to: Adobe Acrobat DC. While trying to install the PDF printer manually, you see one of the following errors:.

Unable to install printer: A certificate was explicitly revoked by its issuer. Unable to install printer: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file. Operation could not be completed: The Specified port is unknown. Reason: The certificate of the PDF driver package has expired, hence not valid.

Right-click Command Prompt and choose Run as administrator. Continue with the next step below.