Unable to find the certificate with thumbprint n the current computer or the certificate is missing private key. The certificate is needed to sign the outgoing token.

Log Name:      Application
Source:        MSExchange OAuth
Date:          26/06/2018 09:03:02
Event ID:      2004
Task Category: Configuration
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      %COMPUTERNAME%.domain.suffix
Description:
Unable to find the certificate with thumbprint E41EF5EA60A68FA5FEA50D2D2C44A31DF6E26DE1 in the current computer or the certificate is missing private key. The certificate is needed to sign the outgoing token.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchange OAuth" />
    <EventID Qualifiers="32772">2004</EventID>
    <Level>3</Level>
    <Task>2</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-06-26T08:03:02.000000000Z" />
    <EventRecordID>7925035</EventRecordID>
    <Channel>Application</Channel>
    <Computer>%COMPUTERNAME%.domain.suffix</Computer>
    <Security />
  </System>
  <EventData>
    <Data>E41EF5EA60A68FA5FEA50D2D2C44A31DF6E26DE1</Data>
  </EventData>
</Event>