ADFS Logout problem MSISignOutProtocol preventing logout attempts

Question

This is a duplicate of ADFS Logout problem on our testing platform - Microsoft Community, however I can't access the link for where the discussion continued.

https://[Domain name]/adfs/ls/?wa=wsignout1.0

1. When user perform login, the below two cookies appear

• MSISAuth
• MSISAuth1

2. When user perform the logout, the below two cookies delete

• MSISAuth
• MSISAuth1

The below cookies created

• MSISSignoutProtocol (10 mins expiry time)

3. When user perform login in same browser again, the below two cookies will appear again

• MSISAuth
• MSISAuth1

4. When user perform logout in same browser again, the below two cookies may not be deleted. It depends on if MSISSignoutProtocol has been deleted or expired.

• MSISAuth