When I log into a new site, my MBP doesn't prompt to save the password to the iCloud Keychain. However, both my iPad and iPhone do. I can then use the iCloud Keychain logins saved by those devices on all of my Macs and iOS devices.
The MBP does have iCloud Keychain turned on. Any ideas how to get it to save so the login can then be made available to other Macs and iOS devices?
You can try resetting the keychain, but you will lose all your passwords.
Try running Keychain Access/First Aid and resetting the original keychain.
Keychain Issues - Resolve see post by Kappy
Please take these steps to resynchronize the iCloud keychain. Your keychain on iCloud and your other Apple devices won't be affected. Take Step 2 only if Step 1 doesn't solve the problem.
Step 1
Back up all data.
Open the iCloud preference pane and uncheck the Keychain box. You'll be prompted to delete the local iCloud keychain. Confirm—the data will remain on the servers. Then re-check the box. Follow one of the procedures described in this support article to set up iCloud Keychain on an additional device. Test.
Step 2
If you still have problems, uncheck the Keychain box again and continue.
Triple-click the line below on this page to select it, then copy the text to the Clipboard by pressing the key combination command-C:
~/Library/Keychains
In the Finder, select
Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
A folder named "Keychains" should open. Inside it is a subfolder with a long name similar to (but not the same as) this:
421DE5CA-D745-3AC1-91B0-CE5FC0ABA128
The above is only an example; yours will have a different name of the same general form. Drag the subfolder (not the Keychains folder) to the Trash and empty.
Restart the computer and re-enable iCloud Keychain.
Why doesn't Macbook save password to iCloud Keychain?
