Linked Questions

120
votes
2answers
128k views

GPG error: The following signatures couldn't be verified because the public key is not available [duplicate]

Possible Duplicate: How do I fix the GPG error “NO_PUBKEY”? after sudo apt-get update I get this error: W: GPG error: http://archive.hivemind.me all Release: The following signatures couldn't be ...
102
votes
2answers
90k views

There is no public key available for the following key IDs 1397BC53640DB551 [duplicate]

When I run the command: sudo apt-get update I got this following warning: There is no public key available for the following key IDs: 1397BC53640DB551 This is the only warning I got and I do not ...
32
votes
1answer
78k views

How to fix GPG in updater [duplicate]

I have asked this question before, but it was closed as a "duplicate." I can assure you that my scenario is original, as it does not refer to third party PPA's. I am having GPG problems with system ...
37
votes
1answer
19k views

Skype update error when running apt update [duplicate]

When I run sudo apt-get update to update the system I get this error on the bottom of the console: W: GPG error: https://repo.skype.com/deb stable InRelease: The following signatures couldn't be ...
30
votes
1answer
45k views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY [duplicate]

When I run apt-get update, I get this error message: Err:18 http://dl.google.com/linux/chrome/deb stable Release.gpg The following signatures couldn't be verified because the public ...
6
votes
2answers
25k views

Signatures not verified [duplicate]

These are the signature errors that persist after I tried several fixes mentioned on the Internet W: GPG error: http://deb.opera.com stable InRelease: The following signatures couldn't be verified ...
10
votes
1answer
20k views

Apt-get update error: http://extras.ubuntu.com Public key unavailable [duplicate]

GPG error: http://extras.ubuntu.com natty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192 I think I selected to ...
4
votes
1answer
22k views

Can't get rid of GPG-error: http://download.opensuse.org [duplicate]

I have been googling for hours trying to find a way to get rid of the annoying gpg-error referring to the link below. W: GPG error: http://download.opensuse.org Release: The following signatures ...
11
votes
1answer
4k views

“The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192” [duplicate]

$ sudo apt-get update W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com maverick ...
5
votes
2answers
28k views

Some index files failed to download / public key not available [duplicate]

When I try to use sudo apt-get update it gives this error: Fetched 5.530 kB in 53s (104 kB/s) W: GPG error: http://extras.ubuntu.com precise Release: The following signatures couldn't be verified ...
5
votes
3answers
3k views

GPG KEYEXPIRED error in when updating repositories [duplicate]

Since yesterday afternoon I'm getting some GPG key expired errors from the official repositories (I checked my sources.list and the only sources are the official ones). The URL I'm getting the error ...
3
votes
1answer
6k views

GPG Error Missing Signature [duplicate]

When I do the command below: sudo apt-get upgrade At the bottom I get an error saying W: GPG error: http://download.opensuse.org Release: The following signatures couldn't be verified because the ...
4
votes
3answers
6k views

gpgkeys: key C927EBE00F1B0520 not found on keyserver [duplicate]

Possible Duplicate: How do I fix the GPG error “NO_PUBKEY”? I am using 10.04 LTS - Lucid Lynx. I shutdown the computer while a software update was running. Then after I restarted my ...
1
vote
1answer
4k views

16.04: Cannot update OwnCloud [duplicate]

I have issues with updates for the OwnCloud desktop release: teddy@Yoga-2:~$ sudo apt-get update --allow-unauthenticated [sudo] password for teddy: Hit:1 http://archive.ubuntu.com/ubuntu xenial ...
3
votes
0answers
11k views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F [duplicate]

When I type sudo apt update I get this response: Get:1 https://dl.winehq.org/wine-builds/ubuntu bionic InRelease [6,242 B] Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease ...

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