Updating App Store apps fails with macOS 26.1 | 15.7.2 | 14.8.2

[avichou]

macbook air m1
macOS 26.1 beta 2

it just tries to install then throws an error

[NeckBeardPrince]

Same issue here, no apps are updating.

[Neoconair]

Same for me

[xTriZzz]

+1 same issue. It recognizes that there's an update but fails to begin the installation.

[urniar]

is this app still upadint?

[mangerlahn]

Thanks for the report! I see this issue as well. I try to find time in the next couple of days to see if there is a fix or if this is a bigger issue. Anyone having this issue on macOS 26.0 or is this currently just a beta OS issue? I am on the beta myself, so I can't check at the moment.

[SukeshSiva]

+1 . running beta 26.1 (25B5057f)

[rgoldberg]

@mangerlahn this is probably the same problem as mas-cli/mas#1029.

CKPurchaseController probably no longer works.

[mangerlahn]

Hey @rgoldberg,

thanks for mentioning! I can confirm that this is still an issue in 26.1 beta 4, so far I was not able find out anything useful, but my experience is very much limited. I will continue to poke around and write if I find anything

[rgoldberg]

@mangerlahn Thanks for investigating. I tried to use ASDPurchaseManager & ASDPurchase instead of CKPurchaseController & ``SSPurchase, but I needed entitlements. I granted all the entitlements that App Store.app` has, but then mas got killed immediately with no explanatory message. ChatGPT said that is normal when you try to use entitlements that are only to be used by Apple's code. I was whittling down the entitlements that I granted, but I think that the newer Apple private frameworks probably all require entitlements that can only be used by Apple, and there probably are no public framework replacements. So mas & Latest will probably not be able to update MAS apps…

[mangerlahn]

Probably, yes.

I tried to check whats going with the existing frameworks used by mas and Latest. As far as I know, the processes talk to a service called storedownloadd, which I believe handles the download and installation of App Store apps. In the console I get this interesting message from that service:
*** Assertion failure in <private>, SoftwareInstallOperation.m:577

So my guess would be that something goes wrong within that service, resulting in the error being returned we then see. I have yet to find out what exactly is causing the issue. Could very much be a permission issue as well. But I did not find anything in the logs for now.

[Will-Georges]

I am on 26.0 but I am having issues detecting updates for any app. The date still is stuck on "yesterday" for a few things even if that was days ago. Clicking the refresh button does nothing. Even apps on the app store are not detecting updates, even when I know there is one.

[rgoldberg]

@mangerlahn i didn't look into what is causing this issue, i just looked into trying out newer frameworks. I don't have an extra machine on which to install macOS betas. I also don't have any multi-boot setup.