Q: My Mac keeps asking me for my iCloud Password, is that normal?

just an idea. You have to appropriately sign in with the "Acounts"  at System Preferences. Once you submit your iCloud name and password there your system will not ask you again for password. If ever you change your password in iCloud webpage, you have to do the same with your Mac.

This was effective for me. Grazie mille. The key is, I think, to focus on the iCloudiness of this whole episode.

I entered my "superficial" Apple ID password into the prompt. I have 3 Apple IDs: @icloud.com, @me.com, @mac.com. While I was entering the password into @me.com, another demand for the password came up, this one for @icloud.com.

I stayed on track with the first one that had popped up (ignoring the other), did the two-factor authentication, and then when it offered me an application specific password for "FaceTime and Messages," I erased those words and typed in iCloud. It generated the application specific password, I copied it to the clipboard, and pasted it into ALL THREE pop-up windows, and they all stopped popping up. I rebooted, not believing it could have been so simple, but no demands for my iCloud password showed up.

Thanks again to LilBirdie93.

Try the method of LilBirdie93, on page 2 of this thread. I perhaps made it more clear, perhaps less clear in my post on page 3.

That will NOT work for my wife. She has a different Facetime address and iCloud address (a now obsolete email address that was set up by an Apple techni when we bought her computer.) By "different" I mean different from the iTunes account that we both buy things on.

Does any of this SIMPLE stuff make any sense?

I am a power user of the Mac system, using three computers daily, and I am an FCPX editor as well as the admin of a large forum. None of the solutions suggested in this (and a number of others) thread have worked for me. Two out of the three machines, all running the latest versions of Yosemite, behave in this way.

Originally, the obnoxious requests for PWs only popped up on my new 5K iMac; then the quad-core MBP fell victim a couple of weeks ago. Neither of these machines has had their OS changed in any way, apart from recommended updates. I am an iCloud user, and Mail, Contacts, etc., work as advertised. Because of this, I know I am logged in correctly. I have tried logging out of iCloud and logging back in; the PW requests continue. I do not use either of the programs that request PWs.

No suggested solutions here, so far, has stopped FT and Message PW requests from popping up in the first 30" or so after re-starting the two big machines.

I simply press "Cancel" twice, but the existence of this bug is disturbing, I have to say.

FWIW, I'm using 10.7.5 on an iMac and I think I fixed it. When I clicked "Sign Out" it asked me if I wanted to delete first contacts and calendars, then documents, then photos stored in iCloud from this Mac (my work computer). I clicked "yes" to all and then signed back in and voila, it worked. Annoying, to be sure, but a fix nonetheless.

This is also happening to me, I don't have Yosemite (I have avoided upgrading cos so many people have told me it's rubbish) -- and it's doing it on me, as well. 3 or 4 prompts every time I reboot. Getting REALLY annoying...

hey apple, any solutions what gives?

Don't expect Apple to respond here, Maxwell. The support communities are user to user only. For a response from Apple, you'll need to go to https://www.apple.com/support/contact/.

Hi Gabriel,

I saw your answer from  Feb 17, 2015 4:35 PM:

Re: My Mac keeps asking me for my iCloud Password, is that normal?

"Finally I realised that iMessage had stopped working correctly - so I couldn't use it to send SMS messages from my Mac desktop.  To fix it I had to generate a new app specific password (I use Apple two step authentication).  When I did this the problem went away.

So my theory is that the source of the password prompt is iMessage and not iCloud at all.  If I'm right then this is extremely misleading. "

-

I have the same problem... Please would you mind explaining how you fixed this..? 

i.e. the generation of a new app specific password - I'm not quite sure how to do this...

Many thanks, Karen

Every time I reboot my iMac with Yosemite, I get repeated prompts for my iCloud password. It just comes back and prompts me for the same password again.  Interspersed with that, I get another alert that says I have to provide an app-specific password, but nowhere does it say for what application! I think the only ones I've set up in the past were for FaceTime and Messages (together, IIRC). But I can just start clicking LATER or canceling both of these alerts, and they eventually stop coming back. Even without entering the app-specific password, I can still open FaceTime and Messages without getting any errors.

So basically the solution is to simply ignore the request.

The next time I reboot, I'm going to just try cancelling the iCloud Password and App-specific password prompts from the get-go, and see what happens.

It looks like ingoring seems to be the right task - same does Apple...

THINK DIFFERENT!

I'm having the same problem. I have no idea what to do...so frustrating. Hate to say it but it makes me want to you use something other than iTunes.