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After upgrade to MacOS Mojave, I cannot login or connect to App Store.

I am using the latest MacBook Pro 2018 version. After upgrade to MacOS Mojave, I cannot sign out, login App Store or View my account. It always show "Cannot Connect to App Store". I also upgrade my iMac to MacOS Mojave, my iMac does not have this issue.


How can I fix this issue on my 2018 MacBook Pro?


Thank you

MacBook Pro TouchBar and Touch ID, iOS 12

Posted on Sep 24, 2018 7:50 PM

Reply
379 replies

Sep 28, 2018 2:53 PM in response to smoledman

I had the same issue. After digging around and trying everything I found in the forums nothing helped. Even opening my firewall and disabling deep inspection was not successful.

Finally it came to my mind the apple could use IPv6. Bingo. Forgot I had deep inspection switched on on IPv6 rule as well.

APPLE doesn't like ssl interception with resigning the certificate. They double check the signing authority of their certificate. With ssl interception the root CA changes of course. Next step is to bypass ssl interception for apple sites only to keep security scanning for other sites.

Sep 28, 2018 3:29 PM in response to parrori1

OK. Deep inspection on the firewall means that you break ssl. Like man in the middle. Technically you terminate ssl on the firewall take the certificate and resign with the CA certificate from the firewall. Means on the Mac you still have the certificate coming from Apple but signed by your firewall. App store is checking who was signing the certificate. If not by the right CA it will stop working.

I just switched of deep inspection on the firewall for IPv4 and IPv6 and app store started to work like a charm.


So if you have a firewall doing ssl interception you have to switch it off. If you have IPv6, then you have to switch it off there as well.

Sep 28, 2018 6:27 PM in response to brianyen0

Like everyone else, I am experiencing the same issue, and all of the recommended fixes haven't worked. I've been experiencing this for about 2 months now, and have a bunch of outdated apps because I can't log in to update. Calling Apple and having them do simple things like resettings SMC and reinstalling the OS using the recovery partition didn't help at all!

Sep 29, 2018 10:17 AM in response to joelw135

Yes, a number of people in the thread have reported this to Apple. I've been back and forth with Support and their Engineering team and have found a partial solution to a problem that I was having (High Sierra App Store co-existing with the Mojave App Store, in a folder called "Previous Content"):


  • The folder couldn't be deleted, so I rebooted into Restore mode (command-R while starting up).
  • From the Utilities menu, I opened Terminal and disabled System Integrity Protection by typing the following in the window:
  • csrutil disable
  • Then pressing enter.
  • Rebooting allowed me to delete the previous version of the App Store along with Safari, etc.
  • Rebooting again, after deleting and emptying the Trash, restored some of the panes in the App Store:

User uploaded file

Sadly, though, I still can't connect to the App Store.


So, perhaps partway to a solution but not there yet. I'll update as soon as a solution is found, if I find one.


SIP can be restored using the same process but with the command csrutil enable, FYI.

Question marked as Helpful

Sep 29, 2018 10:42 AM in response to testingtestingtesting

Hey guys,

been reading through this thread, and wanted to post that I had an issue with the App store in Mojave, that I was able to fix. Since this has not been posted in this thread yet, I will provide the steps to correct my issue in case it's something that simple that will help someone else.


My issue was: unable to see, or install updates in the Mac app store after Mojave upgrade.

Cause: Damaged / outdated caches / user settings (plists)

Solution: Use an uninstaller app such as AppDelete, iTrash, or AppCleaner.

Drag the App Store icon from applications to said app (a good option put an alias to the uninstall app on the desktop.)

When the list of associated files pops up, uncheck the App store icon itself, and uncheck the AppStore folder in /Library/Application Support.

Delete, everything else and reboot the mac.


In My case, I was always able to sign in, but updates didn't work. After these steps I signed back ink and everything came back to life. It's been working fine since. I understand there are numerous issues going on here, but no one here mentioned doing this yet, so I thought I would.


Hope it helps someone else! have a great day!

After upgrade to MacOS Mojave, I cannot login or connect to App Store.

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