Unknown Publisher Error When Installing Software

Tags: unknown, publisher, error, Tibco, Spotfire

https://support.tibco.com/s/article/Tibco-KnowledgeArticle-Article-38471

Windows has found a problem with this file
Name: core.cab
Publisher: Unknown Publisher

This file was blocked because it does not have a valid digital signature that verifies its publisher.

This can be cause by the following:

1. Restricted access to internet that can block the signatures to be validated.
2. An application (anti-virus) blocking the signature data.
3. An IE Option setting:
  a. Go to the Windows Control Panel > Internet Options
  b. The Internet Properties dialog pops up. Click on the Advanced tab.
  c. Under Security, check “All software to run or install even if the signature is invalid”.
  d. Run the Installer again. 

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