EPM version 2017.3 Verification - Verify definition signatures/hashes before downloading option is enabled by default and it cannot be disabled.
EPM version 2017.3 Management Console > Tools > Security and Compliance > Patch and compliance > Download updates > tab Content > Verification
Verify definition signatures/hashes before downloading
NOTE: When checked, any definitions that do not have a valid SHA256 hash will not be downloaded. Also, any lists of definitions that do not have a valid signature will not be processed. The download progress form will show any download failures due to invalid/missing signatures or hashes.
An error can occur of "Signature is not valid" if the core server cannot validate the certificate chain correctly. One cause of this is a failure to connect to the internet and the certificate servers properly.
(Signature is not valid)
(Failed to download platform information)
The resolution to this error is almost ALWAYS the connection to the internet.
- The core ideally should be allowed directly through any proxy. If a proxy must be in place the information should be filled out in the Proxy Settings tab within Download Updates.
- If there are still failures the Proxy information should be added to the Internet Explorer proxy option. (Internet Options --> Connections tab --> Lan Settings --> Proxy Server
Further information:https://community.ivanti.com/docs/DOC-23625#jive_content_id_Cannot_connect_to_Ivanti_Patch_Content_servers_andor_vendor_…