Fixing an Installer .pkg Stuck on “Verifying” in Mac OS X

Jul 26, 2016 - 75 Comments

Mac update pkg stuck verifying

Mac users may find that a system update, installer, or package (pkg) can get completely stuck in a verification sequence, with a pop-up alert that says “Verifying ‘name.pkg’…” while showing the Gatekeeper icon and a progress bar that never updates. The effect is the package or installer won’t run as it never completes verification, making it impossible to install. This is a strange issue that can cause some alarm, because it can happen with both third party packages and installers, as well as updates and packages that come directly from Apple. If you ever run into the package stuck on verifying issue within Mac OS X, we’ll show you how to fix the problem and get the package update to install on the Mac anyway.

Note: the “Verifying” process for packages, installers, and updates can take a while on any Mac. This is not a troubleshooting guide for merely slow verifications or for those who are simply impatient, this is only for cases where “verifying” process is completely halted and not working at all, thereby preventing the intended installer from running. If you aren’t sure if the “Verifying” process is stuck on the Mac, open the package, disk image, or installer file as usual and let the verification procedure run for a while, it can take many minutes or longer to complete. If the process is still stuck and unchanged an hour or so later, it’s probably stuck.

Stuck verifying pkg update in Mac OS X

Forcing a Stuck Verifying .pkg Installer to Run in Mac OS X

Re-download the installer: Before anything else, you should consider that the downloaded .pkg installer, dmg, or updater may have been corrupted or perhaps is incomplete. The very first step should be to re-download the pkg or dmg in question, and always get it from a trusted source (for example, get the installer or update directly from the developer and never from a third party downloads site). If you know the installer package is legitimate, completely downloaded, and not corrupt through hash verification or otherwise, proceed as usual.

Assuming the .pkg, .dmg, or installer app is legitimate and still stuck on “verifying” then here is what you can do to force it to run:

  1. From the Finder in Mac OS X, hit Command + Shift + G and enter the following path:
  2. /System/Library/CoreServices/

  3. Locate the app named “” from this directory and launch it directly
  4. Go to CoreServices folder and open Installer app

  5. Navigate to the .pkg file that is stuck on verifying and select to open it
  6. Select package file that is stuck verifying

  7. Success! Run through the package installer or update as usual
  8. Package runs successfully

The package installer should now work just fine, whether it’s a software update for Mac OS, a third party app, or whatever else was stuck in the verifying stage. This seems to happen most often with installers that are run from a mounted disk image, but it can occur with downloaded .pkg updates as well.

Another possible option would be to disable Gatekeeper to prevent the verification process from unidentified and identified developers from running in the first place, but that is really not a good idea as it could open the Mac up to broader vulnerabilities or other issues.

For those who like to dig a little deeper to see what’s going on behind the scenes with the failed verifying attempts, you can open the Console app (/Applications/Utilities/) and you’ll typically find messages from launchservicesd and CoreServicesUIAgent with ‘Error -60006 creating authorization’.

Console log of stuck verifying Mac update

I ran into this exact issue recently when using a Combo Update for Mac OS X on a particular machine getting it up to date with OS X 10.11.6. Strangely, the verifying process failed and multiplied itself nearly a dozen times, which unsurprisingly didn’t work at all. Nonetheless, running the .pkg file through the Installer app allowed the system update to install without a hitch. This is a fairly rare hiccup to occur with installations and updates, but I’ve seen it happen with Microsoft Office, VirtualBox, Mac OS X, and other downloaded updates as well.

Mac update pkg stuck verifying

Did this work for you? Do you know of another solution to this type of issue? Let us know in the comments.


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Posted by: Paul Horowitz in Mac OS, Tips & Tricks, Troubleshooting


» Comments RSS Feed

  1. pham says:

    amazing fix! thank you :D

  2. M T Ratnam says:

    Thank you so much for the clear tutorial! I was struggling with this for ages until I found this.

  3. scuac says:

    Excellent article. I had this issue and started reading this article. I didn’t even get to finish it before the Verifying window disappeared!

  4. Shannon says:

    Excellent! Worked like a champ on OS X El Capitan, version 10.11.6

    Thank you for the quick and easy tutorial.

  5. Sean Michael Harrison says:

    Thank you so much it worked for me!

  6. Mik says:


  7. Gilberto says:

    Your guide was so great.
    Work so good

  8. PKD says:

    When apps are behaving weirdly they have to uninstalled and reinstalled. However, Preview is a part of Mac OS. So this problem can only be fixed by re-installing Mojave. It is quite simple. You will not lose any data or apps, so back up is not essential.

    1. Restart Mac
    2. Hold Command+R during restart till Mac enters recovery mode and asks for default lang
    3. Follow the steps and select option to re-install Mac OS
    – whole process will take 30 – 60 mins depending on internet speed.

    All your hard drive contents will be unharmed.

  9. David says:

    These steps were successful for me! I had a brief moment of “oh, bother” when the install hung towards the end before it resumed. Thank you!

  10. Eric says:

    Didn’t work for me.

  11. Charles Bennett says:

    What a dream; to find some help that actually works! Well done and many thanks. Charles

  12. Jake Mako says:

    THANK YOU SOOO MUCH. I have been trying to download the same file for months and have looked through every tutorial ever made before finding this, and this worked first try!!

  13. Fiona says:

    I can’t find in the files. I only have installer or installer progress. What should I do?

  14. Cliff says:

    This worked for me. Thank you!

  15. Patrik says:

    Thank You! Saved my day.

  16. Julie says:

    I had the same issue but with a .dmg that was greyed-out and couldn’t be selected from within the But the same trick works if you go to /System/Library/CoreServices/ and open the :) Got me unstuck.

    • Nabila says:

      hi, I’m trying to do the same but the didnt open. when i’m trying to open the it can. What should I do? could you help me?

      Thanks before

    • Lee says:

      None of the options seem to work for me. Cannot get the diskimage mounter to load either

  17. DEK says:

    Worked like charm! Thank you!

  18. GP says:

    Thank you! Was stuck and this helped me move forward !

  19. Penny says:

    Thank you! This helped a lot.

  20. Mario says:

    Thanks for the tip! It really helped

  21. Matt says:

    THANK YOU! Did the trick.

  22. Dave says:

    Worked great. But why does the verifier fail in the first place? How does one fix that?

  23. Catherine says:

    I have been looking for a solution since last night!! And I found it here. YOU ARE AWESOME! THANS YOU!!

  24. Alex says:

    Recently encountered this problem where a final cut pro x trial .pkg was stuck on the verifying stage for hours. Problem solved, worked fine!

  25. Sander Pettersen says:

    The does not seem to be able to select the downloaded program i’m trying to open. It’s greyed out.

  26. Patricia says:

    Yea!!! That worked. Thank you for sharing this xoxoxox

  27. tundraaaaa says:

    before i met this article, i was almost giving up. <3<3<3

  28. Twitch412 says:

    Get to where the program is and it’s greyish and I’m not able to select it …

  29. Kali G says:

    Thanks for these directions. They were just what I needed.

  30. Andrea A says:

    Thank you!

  31. Blotto says:

    Apple = we don’t care – we don’t have to.

  32. Annie Alford says:

    Thank you for this!

  33. Tyler says:

    For some reason the application won’t open. Is there any kind of solution? Thanks in advance!

  34. MARCO says:

    It worked beautifully! Thanks

  35. yang says:

    thanks, it works.

  36. Marj says:

    Thank you. It solved my problem.

  37. saints says:


  38. manouche says:

    Thank you, just to precise in french, it’s call “programme d’” and not “install in” or “installer”.

    • Eleove says:

      Thank you so much for this tip! I couldn’t find Installer app on my (French) Mac and I thought I was going crazy… :)

  39. hannah says:

    thank you very much! it is useful

  40. gammonator says:

    i cant seem to find in that directory help !!

    • Walter says:

      Here’s the tricks i tried yesterday and i made it to successfully bypass all the system file check.

      Open terminal app, run this:
      “defaults write LSQuarantine -bool NO”
      Restart is required to make it work.

      Hope it helps. Good luck!

  41. Michael Pinto says:

    I tried following these steps, but I can’t find in Finder and I even tried the EasyFind app and nothing came up. I need help.

  42. StephenESC says:

    Exactly what I needed today!
    Many thanks!

  43. Nicky says:

    Amazing – thank you!!!!

  44. Ankkeet says:

    Sweet! This worked. Thank you so much.

  45. Kalebh Schroder says:

    Launching from installer app worked

  46. sultana says:

    thanks brother!! it works from your smart genius simple steps that help me out really well!! thanks a lot

  47. Carmen Simons says:

    THANK YOU! This worked for me after two days of trying to install. Thanks for publishing this helpful info.

  48. JB says:

    Thanks! Exactly described and quickly solved my issue!

  49. Sophia says:

    This appears to be my error, but this solution doesn’t quite fit. Followed all above instructions and couldn’t find any unresolved installations (.pkg) files in the relevant folders. Essentially a game I had purchased a couple of months ago was lost when an OS X upgrade to Sierra went horribly wrong. Restored to El Capitan, re down loaded the app (twice & restarted) but it keeps asking for verification repeatedly after successfully entering password. Sense something is missing (apart from a few braincells)?

    I’ve checked my account details in App Store are up to date, turned off all security between downloads and it’s worn me down. Can’t seem to snag the solution :( Any ideas appreciated, thanks.

  50. Rebecca says:

    Thank you! Worked great.

  51. RCJPHOTOS says:

    Hi, Thanks for this it worked!

  52. dvindeni says:

    How do I launch “” from this directory it directly?

    And, how to I do step 3 (Navigate to the .pkg file that is stuck on verifying and select to open it)?


  53. garaged says:

    Thanks a lot !

    I had the same problem with git 2.10.0 installer

    Just got stuck on verifying and never worked, but I was able to update my git with your instructions.

  54. Andy says:

    It works perfectly – Thanks for sharing!

  55. Kristen Caven says:

    This seems awesome but… the .dmg file is greyed out!

    • GingerWare says:

      .dmg are images. Mount it first (double click on the dmg, not via the installer), and then navigate to (via the installer) the mounted image (Should be on finder’s “Devices” sub menu)



  56. Paul says:

    Thank you – works like a bomb!

  57. Heather says:

    THANK YOU!!!

  58. Dr. Ellen K. Rudolph says:

    Yay-yyy color me pleased! I downloaded and used EasyFind for this problem and it WORKED like a charm! Thank you very much for that tip, Peter Yudkin. Adobe Acrobat PRO XI seems to regularly glitch with OS X updates, and Adobe reps can never seem to fix it. I may be 70 yrs old but I ain’t dumb (yet). Dr. Ellen

  59. Dr. Ellen K. Rudolph says:

    YOU SAY:
    From the Finder in Mac OS X, hit Command + Shift + G and enter the following path: /System/Library/CoreServices/

    I am in the finder and hitting those 3 keys does NOTHING.
    What am I doing wrong??

    Your explanations are often way-yyy over my head in your assumptions. Please be SPECIFIC.

    My ADOBE ACROBAT PRO XI is stuck and I need to figure out how to do this ASAP.

    • cg says:

      Command Shift G is the shortcut to open the ‘Go to Folder’ dialog in Finder. You have to have the Finder app open to use the shortcut. The other option is to access the dialog by mouse click through the ‘Go’ dropdown menu in the Finder menubar.

      This option brings up a text entry field that allows you to paste in a filesystem path like ‘/System/Library/CoreServices/’, and Finder will open a window onto that location.

  60. Bernhard says:

    Thanks! Using the opened every stubborn installer file! Saves a lot of time!

  61. Chris Giordano says:

    My recommendation would be to do a control-right click on the intended installer then select “Open” from the menu. This will actually tell GateKeeper that this pkg/dmg can be considered an exception and to just allow the installer to open.

    Much easier and much faster so many levels ;)

    Hope this helps someone!

  62. Cerebro says:

    I’ll have to remember this tip. It would have saved me a lot of grief several months ago.

    I had problems updating to 10.11.5. I downloaded the Combo updater (my preferred update method), and it got stuck “verifying”. Tried again. Same problem. Figuring I just got a bad download, I trashed it and downloaded a new copy. Rinse and repeat. I tried the delta updater. Same problem with that, too. Finally, I just gave up and updated through the App Store. I haven’t had the problem, since (the 10.11.6 Combo updater installed without a hitch).

  63. Peter Yudkin says:

    I could not get the Finder to locate the But it was easy using an app called EasyFind. So if you’ve got that app, use it.

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