SCUP-System Center Updates Publisher 4.5 has been configured to download Third-party updates. Self assigned WSUS certificate is published, catalogs for downloading are configured but when publishing has been started there is an error:
"Publish: : Exception occured during publishing: Verification of file signature failed for file: \\server name\UpdateServicesPackages\bcc7176d-5168-4fcc-8ea1-6c4ddb4d2f69\2e66610e-8cf6-4518-a702-b0919cfae686_1.cab"
This error is located in UpdatePublisher.log Temp file on current user.
Solution for this issue is to copy the self-assigned WSUS Certificate to Trusted Publishers and Trusted Root Certification Authorities in certificate store on Local Computer.
After the certificates copy, third-party updates can be published and synchronized with SCCM Server.