{"family":"windowsserver","family_label":"Windows Server","build":"17763.8647","base":"17763","tag":"2019","kb":"KB5091573","kb_url":"https://support.microsoft.com/help/5091573","kb_title":null,"release_date":"2026-04-19","update_type":"2026-04 OOB","update_type_label":"2026-04 OOB","servicing":"LTSC","ms_known_issues":[],"ms_none_known":false,"ms_highlights":null,"title":"Cumulative Update for Windows Server 2019 (1809) (17763.8647)","build_type":"release","channel_label":"Release","branch":null,"kind":"cumulative","kind_label":"Cumulative update","is_dotnet":false,"status":null,"line":{"status":"extended","note":"Extended support"},"created":1776731962,"created_iso":"2026-04-21T00:39:22Z","uuid":"3e531d9a-13df-4b82-86db-225cc537a668","permalink":"/builds/windowsserver/17763.8647/","tag_url":"/builds/windowsserver/2019/","index_url":"/builds/windowsserver/","api_url":"https://search.windowsforum.com/api/builds/build/windowsserver/17763.8647","records":[{"uuid":"3e531d9a-13df-4b82-86db-225cc537a668","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8647)","build":"17763.8647","arch":"amd64","created":1776731962,"created_iso":"2026-04-21T00:39:22Z","build_type":"release","channel_label":"Release","branch":null,"kind":"cumulative","kind_label":"Cumulative update","status":null,"kb":null,"download_url":"https://uupdump.net/selectlang.php?id=3e531d9a-13df-4b82-86db-225cc537a668"}],"summary":null,"known_issues":[],"linked":{"news":[{"thread_id":416641,"node_id":4,"title":"Windows Server 2025 Upgrade via Windows Update: Opt-in Path for 2019 and 2022","replies":0,"views":1535,"post_date":1778022537,"last_post_date":1778022537,"url":"https://windowsforum.com/windows-news.4/windows-server-2025-upgrade-via-windows-update-opt-in-path-for-2019-and-2022.416641/","kind":"coverage","match":"line","pinned":false,"score":0.834},{"thread_id":417959,"node_id":84,"title":"CVE-2026-40365 SharePoint RCE: Patch KB5002870 for SharePoint Server 2019","replies":0,"views":1335,"post_date":1778621952,"last_post_date":1778621952,"url":"https://windowsforum.com/security-alerts.84/cve-2026-40365-sharepoint-rce-patch-kb5002870-for-sharepoint-server-2019.417959/","kind":"fix","match":"line","pinned":false,"score":0.7569},{"thread_id":419642,"node_id":4,"title":"Wittytool Disk Clone: Can You Change SIDs on Cloned Windows Server 2019/2022?","replies":0,"views":242,"post_date":1779784913,"last_post_date":1779784913,"url":"https://windowsforum.com/windows-news.4/wittytool-disk-clone-can-you-change-sids-on-cloned-windows-server-2019-2022.419642/","kind":"coverage","match":"line","pinned":false,"score":0.6074},{"thread_id":421724,"node_id":4,"title":"Office 2019 Mac to Reduced Function Mode in 2026: What Users Must Know","replies":0,"views":53,"post_date":1780435509,"last_post_date":1780435509,"url":"https://windowsforum.com/windows-news.4/office-2019-mac-to-reduced-function-mode-in-2026-what-users-must-know.421724/","kind":"coverage","match":"line","pinned":false,"score":0.5237},{"thread_id":421850,"node_id":4,"title":"Office 2019 for Mac Editing Disabled After July 13, 2026 Certificate Deadline","replies":0,"views":57,"post_date":1780438713,"last_post_date":1780438713,"url":"https://windowsforum.com/windows-news.4/office-2019-for-mac-editing-disabled-after-july-13-2026-certificate-deadline.421850/","kind":"coverage","match":"line","pinned":false,"score":0.5233},{"thread_id":421907,"node_id":4,"title":"Office 2019 Mac Certificate Deadline (July 13, 2026): Read-Print Only","replies":0,"views":54,"post_date":1780445672,"last_post_date":1780445672,"url":"https://windowsforum.com/windows-news.4/office-2019-mac-certificate-deadline-july-13-2026-read-print-only.421907/","kind":"coverage","match":"line","pinned":false,"score":0.5224},{"thread_id":422231,"node_id":4,"title":"Office 2019 Mac Goes Read-Only July 13, 2026: Licensing Cutoff Explained","replies":0,"views":72,"post_date":1780499714,"last_post_date":1780499714,"url":"https://windowsforum.com/windows-news.4/office-2019-mac-goes-read-only-july-13-2026-licensing-cutoff-explained.422231/","kind":"coverage","match":"line","pinned":false,"score":0.5155},{"thread_id":422367,"node_id":4,"title":"Office 2019 for Mac “Perpetual” License Cutoff: Editing Disabled After July 2026","replies":0,"views":39,"post_date":1780517860,"last_post_date":1780517860,"url":"https://windowsforum.com/windows-news.4/office-2019-for-mac-perpetual-license-cutoff-editing-disabled-after-july-2026.422367/","kind":"coverage","match":"line","pinned":false,"score":0.5131}],"tutorials":[],"threads":[],"total":10,"exact":0,"window_days":45},"related":{"history":[{"build":"17763.9020","title":"Cumulative Update for Windows Server 2019 (1809) (17763.9020)","created":1785265116,"kb":"KB5099538","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.9020/","current":false},{"build":"17763.8755","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8755)","created":1778675868,"kb":"KB5087538","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8755/","current":false},{"build":"17763.8647","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8647)","created":1776731962,"kb":"KB5091573","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8647/","current":true},{"build":"17763.8644","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8644)","created":1776849287,"kb":"KB5082123","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8644/","current":false},{"build":"17763.8511","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8511)","created":1773829541,"kb":"KB5078752","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8511/","current":false},{"build":"17763.8276","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8276)","created":1769475837,"kb":"KB5073723","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8276/","current":false},{"build":"17763.8148","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8148)","created":1766185043,"kb":"KB5074975","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8148/","current":false},{"build":"17763.8146","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8146)","created":1765557608,"kb":"KB5071544","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8146/","current":false}],"history_total":138,"prev":{"build":"17763.8644","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8644)","created":1776849287,"kb":"KB5082123","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8644/","current":false},"next":{"build":"17763.8755","title":"Cumulative Update for Windows Server 2019 (1809) (17763.8755)","created":1778675868,"kb":"KB5087538","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windowsserver/17763.8755/","current":false},"wave":[]},"generated":1788056015}