Turning on Advanced Data Protection breaks iCloud Web

Basically the title. When i turn ADP back off, the web interface works normally again. When i turn it back on, it stops working again. No matter the browser, No matter the OS.

Drive fails weirdly

MacBook Pro 14″, macOS 15.3

Posted on Mar 17, 2025 5:43 PM

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Cannot access iCloud Drive with Advanced Data Protection enabled This started happening recently, about a week ago. I am able to authenticate into iCloud.com, but when clicking on Drive I get a message: "There was a problem opening iCloud Drive." This happens across multiple desktop devices. I've cleared cookies, cache. Photos and Notes do not load, it actually signs me out and goes back to icloud.com. Calendar opens fine. I've had ADP enabled for a while now and all of this used to work fine until about a week ago. Edit: Forgot to add, Brave browser and various Linux distros were tested on.
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【As of 2024.12.17】 iCloud for Windows Not Functioning Software: iCloud for Windows App Version: 15.3.138 App Downloaded From: Microsoft Store Operating System: Microsoft Windows 11 Pro (Version 24H2) (OS Build 26100.2605) Issue Overview Date Issue Started: 2024/12/17 (observed) Symptoms: iCloud for Windows is stuck on "Signing in" animation during startup. Synchronization between iCloud for Windows and other Apple devices has ceased to function. No new files originating from the Windows PC are seen on Apple devices, and no files from Apple devices are downloaded to the Windows PC. However, synchronization between all other Apple devices remains intact. Details of Issues: iCloud for Windows Stuck on Signing In: During startup, the app remains on "Signing in" animation endlessly. No network traffic indicates login transactions. Synchronization Failures Across Services: iCloud Photos: Stuck on "Updating." No network activity indicates synchronization is occurring. iCloud Drive: Stuck on "Initializing." No network activity is observed. iCloud Passwords and Keychain: Authentication succeeds, but passwords never propagate. Previously, propagation took about 8 seconds. Bookmarks: Not actively used, but testing reveals no synchronization activity. Calendars and Contacts: Prompt indicating incorrect credentials despite correct multi-factor-authenticated credentials. iCloud Usage Statistics: Fails to display or update usage statistics. No network activity observed. Steps Taken to Resolve: Terminate and Reopen the App: Terminated the app via Windows Settings ➔ Apps ➔ Installed Apps. Reopened the app, but the "Signing in" animation persisted with no network traffic. Repair the App: Repaired iCloud for Windows via Windows Settings ➔ Apps ➔ Installed Apps. The issue remained unchanged. Reset the App: Reset app data via Windows Settings ➔ Apps ➔ Installed Apps. Re-signed into iCloud using correct credentials. iCloud Photos: Stuck on "Updating." No network activity. iCloud Drive: Stuck on "Initializing." No network activity. iCloud Passwords: Download message shown, but passwords do not appear. Bookmarks: No synchronization observed. Calendars and Contacts: "Incorrect credentials" prompt displayed despite correct authentication. Other Remarks: As a paying Apple One Premier/iCloud+ subscriber using Apple and Windows devices, I expect seamless functionality across supported platforms. While I recognize Apple’s focus is on its ecosystem, I believe services marketed as "officially supported" on Windows should operate reliably. This issue diminishes the cross-platform experience promised by Apple’s ecosystem and requires immediate attention to uphold service integrity. I appreciate your efforts in addressing this and look forward to a resolution soon.
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iCloud Drive browser access A couple days ago I started receiving an error (iCloud stopped responding) when trying to access iCloud Drive from browser, and it doesn't matter which browser I use, always the same. Of course I use "Send to Apple" and of course it's a total waste of time. Anyone having similar error who knows what to do? Thanks APP NAME cloudos2 CLIENT TIME xxx USER AGENT Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0 HOSTNAME www.icloud.com BUILD INFO 2304Hotfix52__2304Hotfix52 SESSION ID xxx ENVIRONMENT INFO PROD REPORTED ERROR TITLE Error: [Object => OUTBOUND] MessagingChannel has no connection --> 'QuotaServiceToChildProtocol.didFetchStorageQuota' REPORTED ERROR TYPE UNHANDLED_EXCEPTION LINE NUMBER 11 STACK xxx ERROR CONTEXT undefined
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2 replies

6x6

Level 6

19,551 points

Mar 17, 2025 5:51 PM in response to dkuckeburg

Hello dkuckeburg,

This is to be expected.

When you turn on Advanced Data Protection, access to your iCloud data on the web at iCloud.com is disabled to ensure that your data is available only on your trusted devices. If you turn on web access again, you can use one of your trusted devices to approve temporary access to your data on the web.

dkuckeburg Author

Level 1

6 points

Mar 17, 2025 5:53 PM in response to 6x6

Yes, but it gives me an error instead of prompting me on a trusted device:

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Turning on Advanced Data Protection breaks iCloud Web