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

I have same problem of app store not being able to open. Oddly, today I noticed there was a note attached to the App store icon and it let me update an app it referred to . I hoped now I could enter the app store, but no. I still cant open App store.

I spent over one hour yesterday with apple 2nd line support. They did some tests, replicated the problem and downloaded bunches of log files. They promised to get back in two to three days. I’ll keep you guys posted when I get an update.

I have 3 MacBooks that I upgraded to Mojave when it came out. My 2017 MacBook Pro and my father-in-law's 2017 MacBook Pro work just fine after upgrading. My wife's early 2013 MacBook Air on the other hand is having many of the same Mac App Store issues addressed here. I spent several hours chatting with representatives from Apple including Senior Advisors, trying several different things, as well as doing my own research to fix the Mac App Store on my wife's Mac, to no avail. I was able to finally get the App Store to sign out however, but now it won't sign back in. I hope Apple addresses this in an update soon.

Followed the instructions above but still can't sign into App Store. I put my username and password and while it looks like it accepts it, it never does anything different and continues to show me as not signed in.

Same problem here. Nothing can be done. All the advanced ways of doing it (i.e. certification in keychain and deleting of files in /var/db/clrs etc has been done. No use.

Anyone solved this yet?

MacBook Pro mid 2012

I have the exact same problem. I submitted a bug report to http://bugreport.apple.com a few days ago, but there's been no activity on it.

I tried the certificate trust procedure and deleted the files inside /var/db/crls. I'm not running Snitch and I even tried turning off my firewall to no avail.

It's been this way for over a month now as I'm a developer and I've been using the Mojave betas for a while now.

Would love to get this problem solved.

I have the same problem. The thing is, I did not even want to install the new operating system yet, but my iPhone 7 crashed yesterday and after speaking to tech support throughout the day, I was told to update iTunes and my MacBook operating system after my iPhone wouldn't connect. Now the phone is working which had nothing to do with my MacBook but another non-related problem has developed.

I am so peeved!!!!!

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!

I just spent an hour and a half on the phone with Apple Support. They are aware of the issue. The advisor walked me through a few steps, but the problem remains. I submitted logs and a packet trace. I'll post here if/when the problem is resolved.

I am having the same problem. Contacted support spoke to a supervisor who couldn't get it working for me. He then had me download an app to collect data from my iMac. He contacted the engineers and they are working on it. I hope to hear back on Wednesday. If not I will try cmd-R and restore Mojave.

Tried that, when App Store app was dragged to the AppCleaner I received a message saying "This application can't be deleted as it is required by MacOS". I will find another app and try that if possible.

I tried that using AppZapper and did exactly what you suggested.

Didn't work for me. Although the initial welcome screen displayed telling me about the new Mac App Store, signing didn't work and when I tried to install an app, I just got the same alert saying "cancelled".

Yeah, it looks like there are multiple issues going on here. I don't run the software firewall on my Macs, I leave that. to the firewall in the AirPort Extreme Base Station. IPV6 isn't an issue for me, as my provider doesn't support it for residential customers, only business. So just thinking what might have been different between my setup and others here that prevented the fix.

I did an in place upgrade over high Sierra. late 2015 27" iMac 32 GB RAM, 2TB Fusion drive. Something that did go well for me that I was wondering if it would or not, is the Fusion Drive was converted to APFS from HFS+ with no issues on Mojave upgrade. This was a question, because Apple pulled Fusion Drive support from High Sierra for APFS.

So, considering this was the only issue I had to resolve.

OK mine looks different. I have a 2017 iMac 27" with a 2TB fusion drive. The second image is what looks different. Unless i am looking at it differently. I just spoke to support again and they again informed me that they are working on it. Do you also have FaceTime loading on every boot?

I really hope you guys get issues sorted soon, I've had minimal issues and as I've said I've resolved all I can, the others remaining in my case are App issues, which I've been in communication with the developers for, and really, it's only one pice of software, and the issue is minor, and doesn't affect daily use of the system.

I do feel for those on this thread, and others I've read that are having issues. I've beta tested for Apple the last few os releases, and know what kind of issues that can come up. Since I didn't really have any issues with Mojave, that weren't easily fixed, I had my hopes more people would be able to experience a problem free upgrade this time around. At least, more so than the last couple versions.