For me, it shows as: https://outlook.linkedinlabs.com/osc/login
In the future, I recommend you backup your registry before you make any changes for this very scenario. You can also automate it by using ERUNT - You can set it up in Task Scheduler to run once a day if you wish:
C:\Windows\Erunt\AUTOBACK.EXE %SystemRoot%\ERDNT\AutoBackup\#Date# sysreg otherusers /noconfirmdelete /noprogresswindow /days:7