app store update page looks strange

As of today 10th May 2021, this is still an issue. Seems to me they just need to re-install their .css file.

*BUT* the functions still seem to work.

Using the web v1.0 buttons - I updated:

• Security Update 2020-006: recommended for all users and improves the security of macOS.
• iTunes, Version 12.8.3: This release includes security updates.
• macOS Supplemental Update: This update resolves an issue with launching certain 32-bit apps.

I understand support expiry etc. But this just makes Apple seem like a low quality outfit to many of their oldest loyal customers on older versions of the MacOs. Huge marketing fail.

Same issue here on Mac Mini Mid 2011, running final version of High Sierra 10.13.6 with Security Update 2020-006 (17G14042) released November 12, 2020.

See screen shot and logs below.

Apple, please resolve this issue on the server end.

2021-05-09 11:57:10-04 [compNameRedacted] softwareupdated[1249]: SUUpdateServiceClient: (App Store) is Apple Signed!
2021-05-09 11:57:10-04 [compNameRedacted] softwareupdated[1249]: Adding client SUUpdateServiceClient pid=64587, uid=501, installAuth=NO rights=(), transactions=0 (/Applications/App Store.app/Contents/MacOS/App Store)
2021-05-09 11:57:10-04 [compNameRedacted] App Store[64587]: Query for available updates: FINISHED
2021-05-09 11:57:10-04 [compNameRedacted] App Store[64587]: Done waiting for available updates to be initially populated
2021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: SUScan: Scan for client pid 1249 (/System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated)
2021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: Got status 2002021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: SUScan: Using catalog https://swscan.apple.com/content/catalogs/others/index-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
2021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: Added 371 PPD versions for /Library/Printers/PPDs/Contents/Resources from cache as of 2021-01-06 11:10:43 +00002021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: SUScan: Elapsed scan time = 0.92021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: Refreshing available updates from scan2021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: Scan (f=0, d=0) completed 
2021-05-09 11:57:12-04 [compNameRedacted] softwareupdated[1249]: 0 updates found:
2021-05-09 11:57:49-04 [compNameRedacted] softwareupdated[1249]: Removing client SUUpdateServiceClient pid=64587, uid=501, installAuth=NO rights=(), transactions=0 (/Applications/App Store.app/Contents/MacOS/App Store)

I just tried your solution: elegant and not difficult,

here a screenshot of the result.

However, the appearance of the App Store page is not solved by this - altho I have found in the recent past that available updates on that strange looking page could be installed without any problem.

So this is NOT a "server side" problem?

Thank you for your helpful solution!

Awesome! As of 07/01/2021, my macOS High Sierra App Store Updates page looks good again. Woohoo! Thank you, Apple. We were all correct in stating to them via numerous phone calls and tickets that it was indeed a faulty CSS link.

Thank you for those details.

As there isn't a way to uninstall the App Store without reinstalling the entire macOS, we invite you to reach out to us here to continue working with you to resolve this issue: Get Support

We look forward to hearing from you.

Cheers!

Where exactly on that page should someone give feedback about the Mac App Store?

M1 Mac mini, macOS 11.2.3; Watch, series 5 GPS/cellular, watchOS 7.3.3; iPad Pro 2nd Gen, iPadOS 14.4.2; iPad Air 2, iPadOS 14.4.2; iPhone 12 Pro, iOS 14.4.2; TV 4th Gen, tvOS 14.3  HomePods, audioOS 14.3 and Airport Express w/ Airplay 2

My mid-2011 iMac (27”) has this same issue. I called after trying everything to fix it myself and have spent the past few days with Apple Support via phone. The last resort was to reinstall OS 10.13.6, which I did. This still hasn’t fixed the issue. I did state there were others I had found in the tech blogs complaining about this exact scenario and that it was really weird to me that it seems to have happened right after Apple had reported Mac App Store outages on ~ 04/03/2021. Since that service came back up, it appears our Mac App Store Updates (and only the updates page) looks like it is missing it’s CSS, etc.). The actual update process seems to work with the buttons given on the HTML page, it’s just ugly.

Here’s hoping this gets escalated and fixed. I hope everyone who is having this issue clicks the “I have this question too” button above on this thread as well as send in a feedback report.

I have exactly the same issue on both my High Sierra and El Capitan MacBook Pros. Contacted Apple Support yesterday via chat and reported it (was told to try safe mode - no dice).

On El Capitan, I enabled the AppStore debug menu and saved the page source to disk to try and pick through it to find the problem. I wonder if it's an issue with the CSS files being called from r.mzstatic.com via plain HTTP rather than HTTPS, and WebKit not allowing a mix of secure and insecure resources on the same page:

<link charset="utf-8" rel="stylesheet" type="text/css" href="http://r.mzstatic.com/htmlResources/8999/da-storefront-base.css" />

<link charset="utf-8" rel="stylesheet" type="text/css" href="http://r.mzstatic.com/htmlResources/8999/da-storefront-autoinstallations.css" />

... in any event, glad to find out that it's not just my machine, and that it's been escalated to engineering already.

Thanks for reaction! Looks exactly like mine, I am still on El Capitan, first time I encounter a thing like this.

My old med 2009 machine has served me just fine all these years and still hums like a happy bee.

Greets from Holland.

I have the same problem on two computers, both running High Sierra. Since nothing has been changed on the systems, I suspect that Apple has once again changed something that is then causing these problems.

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 new 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.

That sounds exactly like what I figured is the problem – a failure to load CSS style sheets due to a Content Security Policy or a mixed content restriction. The CSS resources do load in the other three tabs – Featured, Top Charts and Purchased.

I agree with Richard, the CSS call in the "Top Charts" tab is:

<link charset="utf-8" rel="stylesheet" type="text/css" href="https://s.mzstatic.com/htmlResources/8999/da-storefront-base.css" />

ie using SSL, whereas the one in the Updates tab is plain ol' HTTP.

By rights, this ought to be a ten minute fix.

My Late 2011 macbook prohas been this way for a while- I thought something was wrong with my computer and has reinstalled high sierra several times- but no fix. Just paid to have my computer wipesd- spent countless hours transferring important data/photos- and paying $$$ and still is the same😡 it is also like that on my imac 2012. Very frustrating and makes me want to switch away from apple!!