'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 ./ Release' is not signed

Question

W: GPG error: http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 ./ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2F7F0DA5FD5B64B9
W: The repository 'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 ./ Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I am trying to get rid of the above error message seemingly related to release key and opensuse url.

What would be the proper solution?

Solution

This worked for me:

wget -nv https://download.opensuse.org/repositories/home:selmf/xUbuntu_16.04/Release.key -O Release.key
sudo apt-key add - < Release.key
sudo apt-get update

Source

Comments

[sagarr]

Does not solve my problem: am getting W: GPG error: http://download.opensuse.org/repositories/home:/manuelschnei‌​d3r/xUbuntu_16.04 Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1488EB46E192A257 E: The repository 'http://download.opensuse.org/repositories/home:/manuelschne‌​id3r/xUbuntu_16.04 Release' is not signed.

[AspiringCanadian]

Out of all the solutions, this worked for me. Thanks!

[Jonathan]

Because I use lutris for gaming I had to replace the username selmf or manuelschneider to strycore in those commands then it worked. Your error may be similar just swap the name out