Event ID - 1

Event Id1
SourceMSExchange Autodiscover
DescriptionUnhandled Exception "%1"
Stack Trace: %2
Event InformationAccording to Micosoft :
Cause :
This Error event indicates that an unhandled exception occurred for which information will be captured in the event description and in a Stack Trace. The event does not prevent the Microsoft® Exchange Autodiscover service from functioning.
Resolution :
No user action is required.
Reference LinksEvent ID 1 from source MSExchange Autodiscover

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