iCloud taking forever to sign in, and eventually error message pops up "cannot sign into iCloud at this moment"
Since upgrading to OS Sierra and iOS 10, I cannot sign into iCloud on Macbook Pro Retina Display OS Sierra, I know my password is correct. After entering password, it loads for about 5 minutes, until an error message arrives informing me I cannot sign into iCloud. In addition to this recent error "Share My Location" not activating in iCloud settings on iPhone 6s Plus, iOS10.
MacBook Pro with Retina display, macOS Sierra (10.12)