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當您使用離線通訊錄 (OAB) 陰影分配時,如果 OAB 檔案的使用時間至少為 24 小時,則會從 OAB 世代伺服器下載這些檔案。 不過,由於 Microsoft Outlook 用戶端的預設下載期間為 24 小時,下載的檔案最多可能為 48 小時。

Microsoft Exchange Server (CU13 的累積更新 13) 引入參數,讓 OAB 陰影分配檔案的年齡限制可設定。 如此一來,陰影分配伺服器就會更頻繁地重新整理 OAB。

新增此參數之後,您可以執行 Set-OrganizationConfig Cmdlet 並使用 -OabShadowDistributionOldestFileAgeLimit 參數來設定年齡限制值。 例如,若要將伺服器設定為下載超過八小時的 OAB 檔案,請執行下列 Cmdlet:

Set-OrganizationConfig -OabShadowDistributionOldestFileAgeLimit 08:00:00


若要修正此問題,請安裝Exchange Server 2019 的累積更新 13更新版本。

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