App Store "Updates" looks very wrong

I have the same problem on three Mac desktops and one MacBook Pro – all running High Sierra. The failure to load CSS styles only occurs in the Updates tab of App Store. Is this due to a Content Security Policy or a Mixed Content issue that High Sierra cannot satisfy or process? If so, why do the other tabs load CSS flawlessly? I.e. Featured, Top Charts and Purchased. I am pretty sure this poster on another thread had isolated the issue: https://discussions.apple.com/thread/252635034?answerId=255006847022#255006847022

Same behavior on Sierra too for me. Something screwed on their side... again. Got a lot of AppStore problems on Mojave a few months ago but now ok.

Then, if I read correctly, El Capitan, Sierra and High Sierra are all affected now!

I had the same problem on a 2017 MacBook Pro 13", macOS 10.13. I fixed it by upgrading my macOS. I was able to upgrade to the latest OS, Big Sur. I found this article helpful for figuring out what's the latest OS you can upgrade to: https://www.uvm.edu/it/kb/article/outdated-macos-and-how-to-upgrade/

You can upgrade without using the Update tab. Instead, find the OS you want to upgrade to directly in the App Store (online or in the app).

Interesting question. I have two Apple IDs. One has two-step authentication activated (and it cannot be rolled back). The other ID, which is the one I use for AppStore and iTunes, has not had two-step activated. But I don't see how this could possibly be related to a failure to load CSS (cascading style sheet) from an external resource site. As noted above, this is a CSP issue – Content Security Policy. High Sierra apparently is not wired to handle the CSP that must have been added to the App Store in the last month or so. Too many people are having this problem to lay blame on the client side. It is a server side issue that Apple can fix in a heartbeat if they really care.

I believe this occurs for all Macs running High Sierra or earlier, which Apple does not formally support anymore. But the update page is still usable and still works. I did some updates on my Macbook Air running High Sierra. It doesn't look as nice but the functionality is still all there, in terms of updating Apps.

@steve626, what leads you to "belief". Is there a statement from Apple to say that the behaviour is expected? Or is it from your personal experience?

Evidently @BDAqua concurs with you, however @ChrisPixelZoom says he spoke with Tier 1 and Tier 2 Apple support with neither of them suggesting that the behaviour was normal for unsupported versions.

ovirt wrote:

@steve626, what leads you to "belief". Is there a statement from Apple to say that the behaviour is expected? Or is it from your personal experience?

Evidently @BDAqua concurs with you, however @ChrisPixelZoom says he spoke with Tier 1 and Tier 2 Apple support with neither of them suggesting that the behaviour was normal for unsupported versions.

My belief is from personal experience. I have access to Macs running El Capitan, Sierra, and High Sierra. All of them have this "new" odd primitive appearance for the App Store. The computers (that I have access to) that are on Mojave, Catalina or higher all look "normal." All of these systems (Sierra thru Big Sur) still have App Store functionality, it is really more of a cosmetic thing. In my view, it's not worth getting riled up about, it's cosmetic.

As OS's are moved into the "unsupported" category, things slowly stop working. On the El Capitan Mac, there are some companies whose emails do not display in Apple Mail, I have to read them on another computer or use web mail on the El Capitan Mac (which is a 2008 iMac, so El Capitan is as far as it can go). Also on the unsupported Macs, some web pages have stopped displaying properly in Safari -- I have to use either Firefox or Chrome for those. Part off me is a bit surprised that this has happened with the AppStore, but a part of me is not surprised. Apple Support people tend to read from scripts and those scripts no longer apply to unsupported Macs, they are ... well ... "unsupported." That means some things stop working, eventually, some sooner, some later.

I have a 2008 iMac that has great nostalgic value to me (plus it has a built in DVD burner which is kind of convenient at times) but it is maxed out at El Capitan and as time goes by, more and more things require workarounds because browsers, web pages, apps don't run properly. This is clearly starting to happen with High Sierra, which is the highest MacOS for machines which are 10 years old or more. I have one of those also, a MacBook Air 2010, on High Sierra, a beautiful machine that, like the iMac, is very snappy with an internal SSD. But I had to buy a new machine because neither of the older Macs can run the tax software I needed this year.

I suspect that what's occurred is that Apple updated the app updater without regard to creating incompatibility with High Sierra and older OS versions. I spent an hour with a tier one tech going through the same nonsense everyone else has been subjected to, so what burns my *** even more than Apple not giving a **** about users of older hardware who cannot upgrade higher that High Sierra is that Apple can't just post this bug they created and won't fix on the screens that Apple techs use to trouble shoot. This is a known issue that Apple created. Own up to it, inform your customer support techs so they don't waste our time and theirs, and acknowledge the this is just one of many ways we can expect our older hardware to become obsolete by plan.

I’m in the same boat—not so much because of hardware but because of software: I need to be able to run Abobe CS6. Not nay is my App Store messed up, but I am also noticing these other problems that developed about the same time (about a month ago):

—Copy/Paste commands no longer work in iTunes, Safari, Firefox, or between those three apps (weirdly it still works in chrome)

—Finder no longer provides thumbnails for even the most basic files, and cannot figure out how to open them (mp3 files no longer open automatically in iTunes, jpgs no longer default to Preview)

—GarageBand projects now save as folders that GarageBand cannot open.

I feel like there is a connection between these problems that I just can’t see, involving file-organization and inter-operability. Most apps seem to work fine, if you overlook the copy/paste problem. I’m not a conspiracy-minded guy, and I have been a Mac user since 1987, but this all seems pretty fishy to me.

I Just Got An Early 2015 MacBook Air, And I Believe This Problem Is Effecting My OS Updater, I've got Mac OS 10.12 Sierra and everytime I get the notification to update to Catalina it does nothing and the options to update literally isn't there, and same way with my Late 2011 iMac Running Max OS 10.13.6 High Sierra The store looks broken like this on both my Mac's, how can this problem be out for so long and not to be addressed by Apple months ago?

why is it that it's been a few months and the problem is still present in 2021 (Jun 21st) it won't let me update to Catalina because of this problem and I have way too many app incapabilities due to this problem if there's a way around this problem please reply! Anyone

Apple is well aware of this issue. It is how Apple WANTS it. Planned obsolescence is a source of revenue because it forces the consumer to purchase new hardware. Apple wants your money, not your happiness.