Event ID - 1024

Event Id1024
SourceMSExchangeIS Public
DescriptionNT AUTHORITY\SYSTEM was unable to log on to the public store as NT AUTHORITY\SYSTEM.
Event InformationAccording to Microsoft:
You may see the preceding events even though the information store service starts. You need to mount the databases:
1. Start Exchange System Manager.
2. Expand Servers, expand Servername, and then expand First Storage Group.
3. Right-click the Mailbox Store, and then click Mount Store.
4. Right-click Public Folder Store, and then click Mount Store.
Reference LinksEvent IDs When Starting the Information Store with Blank Databases

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