Use the procedure in this topic to remove publishers that were added to the System Center Updates Publisher trusted publishers list when completing the Import Software Updates Catalog Wizard. Publishers are added to the trusted publishers list if Always Accept catalog from <publisher> is selected during the import process. Any new catalogs imported from publishers that are in the trusted publishers list will automatically accept the catalog. Select a publisher and click Remove to remove a publisher that is no longer trusted.
To remove publishers from the trusted publishers list
Right-click any console tree node item in Updates Publisher, and then click Settings to open the Settings dialog box.
On the Trusted Publishers tab, select the publisher to remove, and then click Remove.
Click OK to exit the Settings dialog box.