Skip to content

The Eclectic Light Company

Macs, painting, and more
Main navigation
  • Downloads
  • M1 & M2 Macs
  • Mac Problems
  • Mac articles
  • Art
  • Macs
  • Painting

revocation

How to check an app’s signature

GUI software and the commands you need to get the signature of an app checked thoroughly by macOS, plus a detailed list of error code.

September 17, 2022 Macs, Technology

macOS has checked app signatures online for over 2 years

Why does it take 2 years to realise that macOS has been checking signing certificate validity online?

November 25, 2020 Macs, Technology

Last Week on My Mac: Making essential services fail-safe

Although most were worried about Apple’s failure to deliver upgrades to Big Sur, the most serious problem left many users unable to launch any apps.

November 15, 2020 Macs, Technology

Code signatures: 3 Fixing signature problems

If you have no other option and can be certain there’s no danger in doing so, you can remove a signed app’s signature. But it may not be so simple.

November 3, 2020 Macs, Technology

Code signatures: 2 How to check them

When macOS won’t let you open an app or other software because it warns that it’s (possibly) malware, here’s how to check the signatures.

October 30, 2020 Macs, Technology

Code signatures: 1 How they work, and stop working

The benefits of code signing for Mac users explained. How certificates are revoked, and what happens when they are. And there’s more to signatures than just the certificate.

October 28, 2020 Macs, Technology

What happened with security updates and HP printer software?

Why many had problems, what they are exactly, what you can do about them, and how they should be prevented.

October 26, 2020 Macs, Technology

Why have my HP printers stopped working? How to check their software signature

Many users are today reporting that their HP printer software has suddenly stopped working, with worrying messages implying […]

October 23, 2020 Macs, Technology

How does your Mac know when Apple revokes a developer certificate?

Where does macOS store a list of revoked certificates, and how does it keep them up to date? The answer isn’t perhaps what you expect.

October 16, 2020 Macs, Technology

Last Week on My Mac: Heavy hand on the kill switch

Imagine going to open an app which you use daily, only to be told by macOS that it “will damage your computer” and must be trashed. Can we have confidence in Apple?

August 9, 2020 Macs, Technology
Blog at WordPress.com.
Footer navigation
  • About & Contact
  • Macs
  • Painting
  • Language
  • Tech
  • Life
  • General
  • Downloads
  • Mac problem-solving
  • Extended attributes (xattrs)
  • Painting topics
  • Hieronymus Bosch
  • English language
  • LockRattler: 10.12 Sierra
  • LockRattler: 10.13 High Sierra
  • LockRattler: 10.11 El Capitan
  • Updates: El Capitan
  • Updates: Sierra, High Sierra, Mojave, Catalina, Big Sur
  • LockRattler: 10.14 Mojave
  • SilentKnight, silnite, LockRattler, SystHist & Scrub
  • DelightEd & Podofyllin
  • xattred, Metamer, Sandstrip & xattr tools
  • 32-bitCheck & ArchiChect
  • T2M2, Ulbow, Consolation and log utilities
  • Cirrus & Bailiff
  • Taccy, Signet, Precize, Alifix, UTIutility, Sparsity, alisma
  • Revisionist & DeepTools
  • Text Utilities: Nalaprop, Dystextia and others
  • PDF
  • Keychains & Permissions
  • LockRattler: 10.15 Catalina
  • Updates
  • Spundle, Cormorant, Stibium, Dintch, Fintch and cintch
  • Long Reads
  • Mac Troubleshooting Summary
  • LockRattler: 11.0 Big Sur
  • M1 & M2 Macs
  • Mints: a multifunction utility
  • LockRattler: 12.x Monterey
  • VisualLookUpTest
  • Virtualisation on Apple silicon
  • LockRattler: 13.x Ventura
Secondary navigation
  • Search

Begin typing your search above and press return to search. Press Esc to cancel.

  • Follow Following
    • The Eclectic Light Company
    • Join 3,136 other followers
    • Already have a WordPress.com account? Log in now.
    • The Eclectic Light Company
    • Customize
    • Follow Following
    • Sign up
    • Log in
    • Report this content
    • View site in Reader
    • Manage subscriptions
    • Collapse this bar
 

Loading Comments...