Unusable Key Error after prolonged expired key

Cal's Avatar


17 Oct, 2016 09:40 AM

After one of my keys expired and I then extended the expiration date, I get this Error every few seconds when I try to send an email encrypted with this key.

Here's the error:

gpg: 03080E4AD6E2FAAE4C810B34073754EDB939D605: skipped: Unusable public key
gpg: -&5: encryption failed: Unusable public key

  1. Support Staff 1 Posted by Steve on 17 Oct, 2016 09:49 AM

    Steve's Avatar

    Hey Cal,

    welcome to the GPGTools community support platform. Sorry you are having problems using GPG Suite.

    Have you restarted mail after updating your key? If yes, please restart your mac and see if the problem then persists.

    All the best,

    Important note

    You are running an old version of macOS.

    We recommend to update to macOS 10.11.6. Here is all information about Apple security updates. E.g. here are all security relevant fixes in 10.11.6 aka Security Update 2016-004.

  2. 2 Posted by Calvin Hoenes on 17 Oct, 2016 09:58 AM

    Calvin Hoenes's Avatar

    Hey Steve,
    yes, I already did both.
    Any other ideas?


  3. Support Staff 3 Posted by Steve on 17 Oct, 2016 09:59 AM

    Steve's Avatar

    Should you be available, could you hop on our live chat here:

    We can't promise a solution, but we'd like to inspect this problem in more detail.

    All the best

  4. 4 Posted by Calvin Hoenes on 23 Nov, 2016 11:40 AM

    Calvin Hoenes's Avatar

    Hey Steve,

    are you available to help on the topic now?


    Living in a world of shapes, colors and code.

    ✆ +49 151 18 45 32 12
    ⎌ Tegernseer Landstraße 62
    81541 München

  5. Support Staff 5 Posted by Steve on 23 Nov, 2016 02:26 PM

    Steve's Avatar

    subkey was expired as well. solved via live-chat.

    Glad, this is solved for you. I'm closing this discussion. Should you need further assistance or have questions you can re-open this discussion here or open a new one any time.

    Best, steve

  6. Steve closed this discussion on 23 Nov, 2016 02:26 PM.

  7. Steve closed this discussion on 27 Aug, 2018 12:36 PM.

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