Tried to install os x el capitan and received this error message INSTALL_ERROR_DISTRIBUTION_SIGNED_BY_APPLE

would you please also help me. i have exactly the same problem.

when i tried to download Ei Capitan and i receive a message saying "INSTALL_ERROR_DISTRIBUTION_SIGNED_BY_APPLE"

I tried what you suggested about the console; however, i cannot find the /var/folder. i also tried to search it in my Finder, but I also don't see it. i see one called /var/log

I also don"t see the com.apple.AppStore file.

what should i do then?

thank you very much.

more information, by using console i found the error folder, it is called file://localhost/var/folders/xxxxxxxxx….

however, i cannot find file://localhost in my Finder at all…it is a hidden file? how to find it?

thank you.

Greetings,

When you're in the Finder Application you can click "Go" in the top menu bar (upper left corner of the screen) and go to /var/folders/ via the "Go to Folder" option at the very bottom.

Thanks for this tip, it did work for me

This absolutely worked for me. Thank you!

Hi Quizhelper,

I was having the same problem as StaceyBee. I trashed the offending file and was able to start downloading El Capitan. However, it's been over an hour and it still appears to be downloading. That doesn't see right to me.....?

Thanks for your help.

Greetings,

I'm not particularly sure that this issue is related. This can oftentimes happen if you have a slow or latent internet connection.

I am also getting the "INSTALL_ERROR_DISTRIBUTION_SIGNED_BY_APPLE" error and this is what it shows in console:

3/19/16 2:15:08.387 PM App Store: *** Assertion failure in -[ISDistributionManager verifyDistributionAtURL:allowsDevSign:error:distributionController:], /SourceCache/Pisa/Pisa-93.8/ISDistributionManager.m:163

3/19/16 2:15:08.388 PM App Store: FRPurchaseManager: Preflight operation for 1018109117 failed with error: Error Domain=com.apple.appstore Code=0 "INSTALL_ERROR_DISTRIBUTION_SIGNED_BY_APPLE" UserInfo=0x7fea96403dc0 {NSLocalizedFailureReason=Distribution file "file://localhost/var/folders/q6/56zk98td2mnb00k4bg57g12c0000gn/C/com.apple.app store/1018109117/preflight.pfpkg" is not signed by apple, NSLocalizedDescription=INSTALL_ERROR_DISTRIBUTION_SIGNED_BY_APPLE, NSUnderlyingError=0x7fea964aefb0 "The operation couldn’t be completed. (PKProductErrorDomain error 0.)"}

Please help!

Greetings,

You're going to go to this folder here: "file://localhost/var/folders/q6/56zk98td2mnb00k4bg57g12c0000gn/C/com.apple.app store/1018109117/preflight.pfpkg"

You can get there by clicking on the Finder Window then going up to Go in the upper left hand corner then, Go to Folder. That's Finder > Go > Go To Folder and type in /var/folders/ You'll open folder q6 then 56zk98td2mnb00k4bg57g12c0000gn then C and you'll delete the com.apple.appstore file here.

Restart your computer and try again without any issues!

I did as you suggested and am now getting this error:

3/19/16 6:50:39.555 PM App Store: *** Assertion failure in -[ISDistributionManager verifyDistributionAtURL:allowsDevSign:error:distributionController:], /SourceCache/Pisa/Pisa-93.8/ISDistributionManager.m:170

3/19/16 6:50:39.580 PM App Store: FRPurchaseManager: Preflight operation for 1018109117 failed with error: Error Domain=PKDistributionError Code=102 "This version of OS X 10.11 cannot be installed on this computer." UserInfo=0x7fca64537240 {message=This version of OS X 10.11 cannot be installed on this computer., type=Fatal, NSLocalizedDescription=This version of OS X 10.11 cannot be installed on this computer.}

Greetings,

Your computer does not meet requirements for OS X El Capitan, it looks like.

Bummer. Thanks for your help!

Try the solution posted here:

https://discussions.apple.com/thread/5190880?answerId=22568456022#22568456022

Hi this is a general response not familiar with protocol

had the same message when trying to upgrade my early 2008 17"MBP running Lion

OS 10.7.5

all the suggestions seemed a little complex so after sleeping on it this morning I checked the App Purchases file I found I had downloaded Yosemite but not installed so I did and then down loaded and installed El Capitan no problems

It's running ok and USB 3 Express card works but runs a little hot ( it's an AKE 4 port USB 3 card )

Hey Quizhelper,

Ive been reading this thread and have followed your instructions as I found the same error msg in console but when i go to search for that file in Finder - "file://localhost/var/folders/6q/cv28_j815ds3c_478w4fh5cm0000gn/C/com.apple.app store/1018109117/preflight.pfpkg"

i can't find it anywhere?! i also searched var/folder etc and still nothing pops up...

i also noticed this error msg come up in the console too -

31/05/16 9:58:36.361 AM App Store: *** Assertion failure in -[ISDistributionManager verifyDistributionAtURL:allowsDevSign:error:distributionController:], /SourceCache/Pisa/Pisa-93.15/ISDistributionManager.m:163

I have a Macbook Pro 2011 and the reason why i want to upgrade to OS captain is so i can sync my iTunes to my new iPhone 6s. It keeps telling me i need to upgrade iTunes but its the latest version..

Your help would be truly appreciated.

Thanks!