Signature verification for Repository hardware failed and Update Error Repository unknown [OpenSuse Leap 15_2]

Question

System updates app gives an error while checking updates.

If it checks as routine gives a notification "Signature verification for Repository hardware failed".

Second error occurs when I want to check updates by using Software Updates app and ist says "Update Error, Repository unknown".

I tried zypper clean and zypper ref got no error everything seems fine. What to do?

Update Error

Got more detailed error here after posted

Answer 1

# rm -rf  /var/cache/zypp
# zypper up

or try a mirror:

https://mirrors.opensuse.org/

download.opensuse.org is a redirector, so maybe a mirror helps.