Action Cannot Be Completed

This did not help for me as iCloud ID is different as my AppleID for purchases.

On Windows 11 I had to go to "Settings -> Apps -> iCloud". Then press on the 3 dots on the right side and scroll down to reset. This did work for me.

I turned off "Advanced Data Protection" in iCloud, and iCloud for Windows started working again immediately. I do want to have this feature enabled, but I'll wait a few months and hopefully Apple gets this fixed.

This worked for me as well. I uninstalled iCloud first. Then went into iTunes, signed in there, reinstalled iCloud and then was able to log in.

I as well had to update my bios on my HP laptop which I think caused a logout of my iTunes and iCloud.

Anyway, sorted.

I had the same problem.

I was able to fix it by signing into iTunes first (--> show account).

After that, logging in with iCloud for Windows worked again.

I was able to login again by uninstalling and reinstalling, but doing that created a new problem where I get errors that iCloud cannot create my photostream album (Error 376). Ever since Advanced Data Management rolled out iCloud for Windows has been unusable.

I had set up advanced data protection a week or two ago on my iPhone, two windows 11 pc's and one windows 10 PC. Everything worked fine, until this morning. iCloud on both win 11 pc's insisted that I log in, but every time I tried, it gave an error message "action cannot be completed" (I only use PC icloud for access to photos and bookmarks). I logged into icloud.com, was advised to set iPhone iCloud setting to "access iCloud data on the web". Then, on icloud.com, I was advised to select an app (e.g. photos) to get temporary access... which would be revoked every time I logged out. On another identical win 11 PC, the iphone message was that it was not supported and needed to be removed from advanced data protection. It listed that windows 11 PC as a windows 10 iphone!?!. "Removing" the PC did not work. Not a very good user experience. In addition, if I had lost my iphone, I would have lost access to everything in icloud.com until I had a replacement iphone. I concluded that the E2E Advanced Data Protection was too cumbersome and buggy so I decided to remove it.

Greetings jvo6056,

It sounds like you are unable to turn on Advanced Data Protection for iCloud on your Windows computer. We know how important this is for you, and we will help get you to the right place to find a resolution.

The first thing to try is the steps listed here, which can often resolve this type of issue:

If one of your devices prevents you from turning on Advanced Data Protection, you can choose to remove that device from your Apple ID device list and try again. While Advanced Data Protection is enabled for your account, you can sign in with your Apple ID only on devices that meet the software requirements listed above.

This info is located in this support article: How to turn on Advanced Data Protection for iCloud

Take care!

Same thing for me. After logging in, I get a box that says "Verification failed" for the title and "Action cannot be completed" for the message. iCloud for Windows, latest version pulled from the MS Store. (This version is "supposed" to support Apple's new advanced encryption, which I did enable.)

I tried signing out, uninstalling/reinstalling the app, and removing all Windows devices from my iCloud account and I get the same error no matter what.

This happened to me today on my Windows 10 computer. I was able to setup iCloud fine 3 weeks ago. Today I had to do a bios update on my Dell Computer. Usually, when I do a Bios update, I have to relogin in to icloud. I am putting in the correct password but iCloud keeps giving the same error: "action cannot be completed"

This works!

tried everything but this finally worked thanks !