Apple Configurator 2 cannot sign in, error message displayed

[B4U]

This has started last night on my 2019 iMac running the latest available MacOS Sequoia 15.7.7.
When trying to sign in on Apple Configurator 2 version 2.20 (11B11), it gives an error message.
"The operation couldn’t be completed. (AMSErrorDomain error 100.)"

Tried searching online for the error message and did not find anything.
Anyone else encountered this before?

 

[bogdanw]

I see the same error on two Macs with Sequoia 15.7.7 and Apple Configurator 2.20

 

[B4U]

Sounds like Apple messed something up again then. 😅
Thank you for confirming. 😀

 

[KaliYoni]

When trying to sign in on Apple Configurator 2 version 2.20 (11B11), it gives an error message.
"The operation couldn’t be completed. (AMSErrorDomain error 100.)"

I've been having Apple Account login problems with AC2 as well on Macs running Ventura and Sequoia. I see different error messages though (something like "Sign-in failed"). I first encountered the problem about a month ago. The most recent occurrence was yesterday.