New installtion after uninstalling- same issues around key

[GeurtBloem]

My system Windows 10 on intel i7 system
Here are the errors communicated by msys2 when I tried installing and updating :
$ pacman -Syuu
error: clangarm64: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: mingw32: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: mingw64: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: ucrt64: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: clang32: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: clang64: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
error: msys: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" is unknown
:: Import PGP key 5F944B027F7FE2091985AA2EFA11531AA0AA7F57? [Y/n] Y
error: key "5F944B027F7FE2091985AA2EFA11531AA0AA7F57" could not be looked up remotely
:: Synchronizing package databases...
clangarm64
mingw32
mingw64
ucrt64
clang32
Please help or suggest action
Thanks
Geurt