Password Screen Flashing on iTunes 12.7

I had the same issue and did not have to follow the steps in the previous reply. The following worked for me:

1) close iTunes - you will need to use Task Manager and end task to do so, since iTunes is essentially unresponsive while the flashing screen is up.

2) disable your network adapter (either wireless or wired) to disconnect from the internet

3) launch iTunes while the network is disconnected

4) re-enable your network adapter

The issue appeared to resolve for me after performing those steps, I did not uninstall or re-install/repair.

I am going through same, what makes it worse is that I had forgotten my AppleID and HAD to wait 14 days for recovery - that in itself was infuriating ... NOW, when I setup my phone and go to Itunes to connect, I have had the flashing password too - I have uninstalled properly, restarted and reinstalled - all to no avail ...I am beyond frustrated

Hi there, did you try the steps posted above?

I copied and pasted for you to quick reference:

1) close iTunes - you will need to use Task Manager and end task to do so, since iTunes is essentially unresponsive while the flashing screen is up.

2) disable your network adapter (either wireless or wired) to disconnect from the internet

3) launch iTunes while the network is disconnected

4) re-enable your network adapter

Best of luck ~

I have had this problem on and off with iTunes running Windows 7 Pro. The first thing I did was change my Apple ID password. The second thing I did was log on to my Apple account online and found that I had two instances of the "device" laptop I was having the flickering on. I clicked on one of the devices and both disappeared. When I logged back in from this same device and put in my new password, everything fixed itself. Now I only have one instance of the "device" in my account page and no flickering password sign-in. I am not exactly sure of the technical reason for my issue, but it could have been the multiple instances of the same device accessing Apple online which was causing the problem. Give it a shot.

I was finally able to make it work. Windows 10 ... right click the itunes icon and select properties...then select compatibility... compatibility mode "windows 7" ... run this program as administrator. After that it has been working.

I experienced the same issue. Wanted to avoid downloading the reinstalling the repair especially because it sounds like that didn't work for everyone. Disconnecting from the internet let me use iTunes locally but I really wanted to sync changes to my iCloud library. Here's what I did....

1) Reboot

2) Disconnect from internet

3) Start iTunes

4) Select Account - Sign Out -- that gave me an error message since I wasn't online but put iTunes into a signed out status

5) Close iTunes

6) Reconnect internet

7) Start iTunes

8) Select Account - Sign In

This allowed me to login and use iTunes online without getting the flashing password dialog. Hope this helps someone else.

i can not believe apple would allow this bug to persist.

in my opinion: apple's software development team, and product owners, of the online/desktop apple itunes application seriously need to be TERMINATED.

I tried doing a repair on the app via Win10 apps/features menu and no luck. Best workaround, which isn't a great fix at all, is to click cancel/X on the dialogue box and not input my password. Can't make purchases but you can use iTunes for your personal library already on the machine and add/remove tracks as usual without using the Store downloads. If you're just using iTunes for a music manager this is your best way forward until they update.

Unfortunately, the repair option, which would make sense, does nothing to solve the issue - at least on my end. I did the disconnect from the internet option and it seems to be working fine for the time being. If you don't have easy access to ethernet cables and are on Windows 10 do the following without leaving your seat:

-Find the internet connection icon in your taskbar. If you're wired it looks like a computer monitor with a small cable on the left side of it. If you're wireless it'll be a wireless broadcast signal.

-Right-click and select Open Network & Internet Settings

-You'll see a few images showing your connection status and path of internet, look below all of that and click on "change adapter options"

-Right click on the adapter shown (Ethernet or wireless will be shown) and probably not many other icons, if any (tip: the active one, which you're going for, won't have an "X" over it and if you're wired you'll want to use the ethernet option, wireless connections need right-clicking on the wireless option)

-You should see the very first option on the drop down menu that says "disable" - select this to disable your network adapter and leave the window open so you can come back quickly

-Close out iTunes if it's not already closed

-Re-open iTunes with the network adapter disabled

-Wait a few seconds then return to the network adapter window you were using a moment ago

-Right-click the same adapter and now there should be an option to "enable", click that to re-engage the network adapter and restore internet connection to your computer

iTunes shouldn't prompt you to sign in again. If it does, enter your password. The glitch was the program not accepting your login and constantly flashing the sign in prompt over and over. Hopefully, you will no longer have that issue now and you can browse iTunes without issue.

If you still have the issue, my best advice then is to click "cancel" or the "X" button until the prompt goes away. It resurfaces every 20-30 minutes as best as I can tell if you go that route but the application seems to be fully functional since I'm technically signed in.

Found a different fix. Disconnect from internet, open and log into iTunes, then reconnect to internet. Now it works. Good luck all.

Disconnecting from the Internet is the ONLY solution to this massive bug. THANK YOU!

Have same issue. Not working for me. I am the admin n computer.

Thanks! This worked for me. Tried the re-download of ITunes approach with no luck.

Yes, about a month, and no way to access the store or Apple Music! If I re-connect to the Internet and re-launch iTunes, it's the flashing screen again.