I have been searching the net for this specific event and can't seem to find anything on it. I can find 4999 errors but not this one. Does anyone know what this is referring to or where I can find the explanation.

Log Name:      Application
Source:        MSExchange Common
Date:          3/11/2015 12:45:38 PM
Event ID:      4999
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      server.domain.com
Description:
Watson report about to be sent for process id: 19568, with parameters: E12, c-RTL-AMD64, 15.00.1044.025, w3wp#MSExchangeSyncAppPool, M.E.Data.Storage, M.E.D.S.FolderSync.QueueDelayedServerOperation, System.InvalidOperationException, 9ff7, 15.00.1044.022.
ErrorReportingEnabled: False

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchange Common" />
    <EventID Qualifiers="16388">4999</EventID>
    <Level>2</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-03-11T16:45:38.000000000Z" />
    <EventRecordID>3302516</EventRecordID>
    <Channel>Application</Channel>
    <Computer>server.domain.con</Computer>
    <Security />
  </System>
  <EventData>
    <Data>19568</Data>
    <Data>E12</Data>
    <Data>c-RTL-AMD64</Data>
    <Data>15.00.1044.025</Data>
    <Data>w3wp#MSExchangeSyncAppPool</Data>
    <Data>M.E.Data.Storage</Data>
    <Data>M.E.D.S.FolderSync.QueueDelayedServerOperation</Data>
    <Data>System.InvalidOperationException</Data>
    <Data>9ff7</Data>
    <Data>15.00.1044.022</Data>
    <Data>False</Data>
    <Data>False</Data>
    <Data>w3wp#MSExchangeSyncAppPool</Data>
    <Data>
    </Data>
  </EventData>
</Event>

Hi,

Thank you for your post.

This is a quick note to let you know that we are performing research on this issue.

Best regards,

Any updates on this?

Still no reply???

I got this too, hope to find something out!

Watson report about to be sent for process id: 20632, with parameters: E12, c-RTL-AMD64, 15.00.1076.009, w3wp#MSExchangeSyncAppPool, M.E.Data.Storage, M.E.D.S.FolderSync.QueueDelayedServerOperation, System.InvalidOperationException, aab7, 15.00.1076.009.

ErrorReportingEnabled: True

Server is Exchange 2013 on 2012r2

You said that you were performing research on this issue. Have you found anything yet?

Any update on this case?

Where you able to figure this out?