This page has some tools to make your life as an Office 365 administrator easier


GUID to ImmutableID

Enter the GUID below and hit the button to convert it to ImmutableID

Base 64

ImmutableID to GUID

Enter the ImmutableID below and hit the button to convert it to GUID


AADInternals backdoor token creator

Dr Nestori Syynimaa avatar
About Dr Nestori Syynimaa
Dr Syynimaa works as Senior Principal Information Security Researcher at Secureworks CTU (Counter Threat Unit).
Before moving to his current position, Dr Syynimaa worked as a CIO, consultant, trainer, and university lecturer for over 20 years. He is a regular speaker in scientific and professional conferences related to Microsoft 365 and Azure AD security.

Dr Syynimaa is Microsoft Certified Expert (Microsoft 365), Microsoft Certified Azure Solutions Architect Expert, Microsoft Certified Trainer, and Microsoft MVP (Enterprise Mobility, Identity and Access & Intune).
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