GSM150 upgrade to 21.04.22 fails

Dear Greenbone-Forum,

we have just installed a GSM150-appliance we received last year and are having problems with upgrading from GOS version 21.04.2 to 21.04.22. Everything else is working fine, including Feed updates. But when selecting GOS Upgrade from the administrative menu we get the following error message: Get:1 file:/opt/greenbone/feed/apt gos21.04 InRelease [4681 B]
                                                   Get:2 file:/opt/greenbone/feed/apt gos21.04 InRelease [4681 B]
                                                   Err file:/opt/greenbone/feed/apt gos21.04 InRelease
                                                     The following signatures were invalid: EXPKEYSIG 81447E3EF6F0BAFA Greenbone Security Feed <>
                                                   Fetched 0 B in 0s (0 B/s)

We have already checked the usual suspects such as network-configuration, but then found this log suggesting it has something to do with the repository/signatures. We are not quite sure how to proceed with updating the appliance so any help would be greatly appreciated.

Thanks in advance

Hi @schlen and welcome to the forum :slight_smile:

You can go ahead and open a customer support ticket with the Greenbone Service Desk. Thanks!


For the record: This is an expected problem with older GOS versions like GOS 21.04.2, as the key used to sign and verify the integrity of the upgrade has expired there.

Our customer support will be able to assist you with a workaround in any case!