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You could try using this tool: Y-PPA-Manager Then there are only two clicks: Advanced Try to import all missing GPG keys


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It depends on whether you still have the private key, or not. Having access to the private key: You're lucky, and will be able to revoke the key. It is as easy as running gpg --edit-key [key-id]. Inside the edit menu, run revkey. Import the revocation certificate if needed (gpg --import [file]), and send it to the key servers (gpg --send-keys [key-id]). ...


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Here are some suggestions: Using Arial with font size 16 or bigger; When you scan, make sure you scan at DPI 200 or 300 and most OCR engines should be able to read correctly.


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If the keys are stored on key servers, deleting is not an option. It is not possible to delete anything from the key server network. So, you are to consider between expiration and revocation. Expiration has the meaning of limiting the validity to a given date, while revocation is a statement "I won't use this key any more", with the possibility of giving a ...


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You probably migrated your .gnupg folder from another machine, or tampered another way with the file permissions. GnuPG enforces private ownership of the folder and some files for security reasons. These two lines fix the permissions. The first one ensures that the ~/.gnupg folder (and everything in it) is actually yours. To possibly overtake ownership, it ...


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The error message already includes a detailed problem statement. You probably migrated your .gnupg folder from another machine, or tampered another way with the file permissions. These two lines fix the permissions. The first one ensures that the ~/.gnupg folder (and everything in it) is actually yours. To possibly overtake ownership, it requires root ...


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You can get around this by going to Update Manager > Settings > Software Sources and unchecking the libre-office-4-4 packages


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It seems your network filters access to port 11371, which is used by the hkp protocol by default. To workaround this issue, select another key server that is also available on port 80, by adding the --keyserver hkp://p80.pool.sks-keyservers.net:80 flag to add-apt-repository. This selects one of the key servers available on port 80 from the SKS key server ...



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