徵兆
MICROSOFT Exchange Information Store (MSExchangeIS) 服務偶爾會停止回應,並記錄下列事件標識符 1002 專案:
Unhandled exception (System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Exchange.Server.Storage.LogicalDataModel.SearchFolder.BaseViewOperatorDefinition(Context context, Mailbox mailbox, IList`1 columnsToFetch, SearchCriteria criteria, Nullable`1 associated)
at Microsoft.Exchange.Server.Storage.LogicalDataModel.SearchFolder.<DoSearchPopulation>d__210.MoveNext()
at Microsoft.Exchange.Protocols.MAPI.MapiViewMessage.<CreateMaterializedRestrictionAndPopulate>d__138.MoveNext()
at Microsoft.Exchange.Server.Storage.MapiDisp.MailboxTaskQueue.RunTaskStep(MailboxTaskContext mailboxTaskContext, QueueItem
原因
MSExchangeIS 程式會因為未處理的 System.NullReferenceExceptions 例外狀況而停止回應,此例外狀況每天產生多次。
解決方案
若要修正此問題,請安裝下列累積更新:
Exchange Server 2019 的累積更新 14 或 2019 年 Exchange Server 日之後的累積更新