{"family":"windows10","family_label":"Windows 10","build":"14393.2759","base":"14393","tag":"2016","kb":"KB4480977","kb_url":"https://support.microsoft.com/help/4480977","kb_title":"January 17, 2019—KB4480977 (OS Build 14393.2759)","release_date":"2019-01-17","update_type":"2019-01 C","update_type_label":"Optional preview update","servicing":"CBB • CB • LTSB","ms_known_issues":[{"title":null,"symptom":"For hosts managed by System Center Virtual Machine Manager (SCVMM), SCVMM cannot enumerate and manage logical switches deployed on the host after installing the update. Additionally, if you do not follow the best practices , a stop error may occur in vfpext.sys on the hosts.","workaround":"This issue is resolved in KB4507459 .","applies_to":""},{"title":null,"symptom":"After installing this update on Windows Server 2016, instant search in Microsoft Outlook clients fail with the error, \"Outlook cannot perform the search\".","workaround":"This issue is resolved in KB4487026 .","applies_to":""},{"title":null,"symptom":"After installing KB4467691 , Windows may fail to start on certain Lenovo and Fujitsu laptops that have less than 8 GB of RAM.","workaround":"Restart the affected machine using the Unified Extensible Firmware Interface (UEFI). Disable Secure Boot and then restart. If BitLocker is enabled on your machine, you may have to go through BitLocker recovery after Secure Boot has been disabled. Lenovo and Fujitsu are aware of this issue. Please contact your OEM to ask if there is a firmware update available for your device.","applies_to":""},{"title":null,"symptom":"After changing file association defaults, some icons in the taskbar appear incorrectly.","workaround":"This issue is resolved in KB4487026 .","applies_to":""},{"title":null,"symptom":"Applications that use a Microsoft Jet database with the Microsoft Access 97 file format may fail to open if the database has column names greater than 32 characters. The database will fail to open with the error, “Unrecognized Database Format”.","workaround":"This issue is resolved in KB4487026 .","applies_to":""},{"title":null,"symptom":"After installing KB4467684, the cluster service may fail to start with the error “2245 (NERR_PasswordTooShort)” if the Group Policy “Minimum Password Length” is configured with greater than 14 characters.","workaround":"Set the domain default \"Minimum Password Length\" policy to less than or equal to 14 characters. 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