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Encounter an error while upgrading to Ubuntu 22.10 from Ubuntu 22.04 - Oct 20

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I encounter a network error while upgrading Ubuntu 22.04 to 22.10 today, the first day of release. network error message enter image description here

Please help, thanks .

John Lo avatar
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The process stops at "Setting up New Software Channels" - step 2
John Lo avatar
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How to get rid of this error: Err http://job.ubuntuce.com ./ InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4FC90FFF9C6B7E15
John Lo avatar
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Then I try: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4FC90FFF9C6B7E15 Return Message: Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)). Executing: /tmp/apt-key-gpghome.wvtJn3E21A/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 4FC90FFF9C6B7E15 gpg: keyserver receive failed: No data
John Lo avatar
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I am getting closer in solving this problem... any insights from the community?
Score:1
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Someone suggested me the following, and it works; https://docs.ubuntuce.com/how-to/fix-repo

Add UbuntuCE Repo Key

wget https://job.ubuntuce.com/KEY.gpg && gpg --output ubuntuce.gpg --dearmor KEY.gpg && sudo mv ubuntuce.gpg /usr/share/keyrings/ && rm KEY.gpg

Update Packages

sudo apt update

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