Update repository is invalid

Retrieving repository ‘openSUSE-Tumbleweed-Update’ metadata ---------
File ‘./repodata/40545d0c83bb98911dcc371e277b3fe8c27b0db61a91c0d2cdb90b80e2902279-primary.xml.gz’ not found on medium ‘http://download.opensuse.org/update/tumbleweed/
Repository ‘openSUSE-Tumbleweed-Update’ is invalid.
[repo-update|http://download.opensuse.org/update/tumbleweed/] Valid metadata not found at specified URL

Hi
Could be just a mirror your being pointed too is incomplete. The update repository is really only there for an emergency release of specific packages.

Give it an hour or so and try again with zypper ref, then zypper dup.

Thanks, Malcolm! Everything is OK now. Sorry for bothering.