{"id":16148,"date":"2026-04-29T08:07:43","date_gmt":"2026-04-28T23:07:43","guid":{"rendered":"https:\/\/m365jp.net\/?p=16148"},"modified":"2026-04-29T08:15:27","modified_gmt":"2026-04-28T23:15:27","slug":"mc1294528-onedrive-sync-supports-up-to-1-million-items-on-windows","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-29-mc1294528-onedrive-sync-supports-up-to-1-million-items-on-windows","title":{"rendered":"MC1294528 | OneDrive sync supports up to 1 million items on Windows"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1294528 | OneDrive sync supports up to 1 million items on Windows<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>stayInformed<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/28\/2026 22:15:01<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/28\/2026 22:14:53<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>05\/31\/2026 07:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p><b>[Introduction]<\/b><\/p>\n<p>OneDrive sync on Windows will support <b>syncing up to 1 million items per sync instance per device<\/b>. This increase is intended to help organizations with large OneDrive and SharePoint libraries sync more content reliably across devices. The capability   is planned to be available first in <b>Public Preview<\/b> (requires the Insiders ring) and later in General Availability.<\/p>\n<p>Devices that do not meet the minimum hardware and configuration requirements will continue to sync at the existing  <b>300,000-item supported limit <\/b>without disruption.<\/p>\n<p><b>[When this will happen]<\/b><\/p>\n<ul>\n<li><b>Public Preview: <\/b>We will begin rolling out in<b> late April 2026<\/b> and expect to complete by  <b>late April 2026<\/b>.<\/li>\n<\/ul>\n<p><b>[How this affects your organization]<\/b><\/p>\n<p><i>Who is affected<\/i><\/p>\n<ul>\n<li>Users syncing<b>&nbsp;OneDrive (consumer), OneDrive for Business<\/b> or <b>SharePoint document libraries<\/b> on  <b>Windows<\/b><\/li>\n<li>Users with libraries that approach or exceed the current <b>300,000-item<\/b> supported sync limit<\/li>\n<li>Preview participants using the<b> Insiders ring<\/b><\/li>\n<\/ul>\n<p><i>What will happen<\/i><\/p>\n<ul>\n<li>Eligible Windows devices can sync <b>up to 1 million items per sync instance<\/b>.<\/li>\n<li>Devices that do not meet the requirements remain supported up to <b>300,000 items<\/b> with no change in behavior.<\/li>\n<li>No disruption is expected for existing sync setups.<\/li>\n<\/ul>\n<p style=\"margin-left: 50px\"><i><b>Note: <\/b>Performance is not yet optimized for syncing a high volume of read\u2011only files or for accounts under legal hold. Microsoft is actively working to improve performance and reliability for these scenarios.<\/i><\/p>\n<p><b>[What you can do to prepare]<\/b><\/p>\n<p>No action is required if you do not plan to use Public Preview.<\/p>\n<p>If you plan to evaluate or prepare for this capability:<\/p>\n<ul>\n<li>Identify devices and users likely to benefit from syncing very large libraries.<\/li>\n<li>Ensure devices meet the <a href=\"https:\/\/support.microsoft.com\/office\/restrictions-and-limitations-in-onedrive-and-sharepoint-64883a5d-228e-48f5-b3d2-eb39e07630fa#numberitemscanbesynced\" target=\"_blank\">  minimum requirements<\/a> (supported OS, memory, storage, and processor).<\/li>\n<li>Verify the recommended <a href=\"https:\/\/learn.microsoft.com\/sharepoint\/ideal-state-configuration\" target=\"_blank\">  ideal state configuration<\/a> for OneDrive and SharePoint sync reliability.<\/li>\n<li>Inform helpdesk staff and impacted users that <b>Public Preview requires the Insiders ring<\/b> and that  <b>ineligible devices will remain at the current limit<\/b>.<\/li>\n<\/ul>\n<p><b>Learn more:<\/b>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/learn.microsoft.com\/sharepoint\/sync-client-update-process#how-we-release-updates-through-multiple-rings\" target=\"_blank\">How we release updates through multiple rings &#8211; The OneDrive sync app update process | SharePoint in Microsoft 365   | SharePoint | Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/sharepoint\/ideal-state-configuration\" target=\"_blank\">Recommended sync app configuration | SharePoint in Microsoft 365 | SharePoint | Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/support.microsoft.com\/office\/restrictions-and-limitations-in-onedrive-and-sharepoint-64883a5d-228e-48f5-b3d2-eb39e07630fa\" target=\"_blank\">Restrictions and limitations in OneDrive and SharePoint | Other issues | Troubleshoot | OneDrive   | Microsoft Support<\/a><\/li>\n<\/ul>\n<p><b>[Compliance considerations]<\/b><\/p>\n<p>No compliance considerations identified. Review as appropriate for your organization.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<p><b>[\u306f\u3058\u3081\u306b]<\/b><\/p>\n<p>Windows\u306eOneDrive\u540c\u671f\u306f\u3001 <b>\u30c7\u30d0\u30a4\u30b9\u3042\u305f\u308a100\u4e07\u4ef6\u306e\u540c\u671f<\/b>\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\u3053\u306e\u5897\u52a0\u306f\u3001\u5927\u898f\u6a21\u306aOneDrive\u3084SharePoint\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6301\u3064\u7d44\u7e54\u304c\u3001\u3088\u308a\u591a\u304f\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u78ba\u5b9f\u306b\u540c\u671f\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u307e\u305a  <b>\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ec\u30d3\u30e5\u30fc<\/b> (\u30a4\u30f3\u30b5\u30a4\u30c0\u30fc\u30ea\u30f3\u30b0\u304c\u5fc5\u8981)\u3067\u5229\u7528\u53ef\u80fd\u306b\u306a\u308a\u3001\u305d\u306e\u5f8c\u4e00\u822c\u516c\u958b\u3067\u5229\u7528\u53ef\u80fd\u306b\u306a\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u6700\u4f4e\u9650\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u304a\u3088\u3073\u69cb\u6210\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u65e2\u5b58\u306e <b>30\u4e07\u9805\u76ee\u306e\u5236\u9650 <\/b>\u3067\u540c\u671f\u3092\u7d99\u7d9a\u3057\u3001\u9014\u5207\u308c\u306a\u304f\u7d9a\u3051\u307e\u3059\u3002<\/p>\n<p><b>[\u3044\u3064\u8d77\u3053\u308b\u304b]<\/b><\/p>\n<ul>\n<li><b>\u516c\u958b\u30d7\u30ec\u30d3\u30e5\u30fc: <\/b><b>2026\u5e744\u6708\u4e0b\u65ec<\/b>\u304b\u3089\u5c55\u958b\u3092\u958b\u59cb\u3057\u30014<b>\u6708\u4e0b\u65ec<\/b>\u307e\u3067\u306b\u5b8c\u4e86\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/li>\n<\/ul>\n<p><b>[\u3053\u308c\u304c\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u4e0e\u3048\u308b\u5f71\u97ff]<\/b><\/p>\n<p><i>\u5f71\u97ff\u3092\u53d7\u3051\u308b\u4eba\u7269<\/i><\/p>\n<ul>\n<li>Windows<b>\u4e0a\u3067<\/b><b>OneDrive(\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30fc)\u3001OneDrive for Business\u3001\u307e\u305f\u306fSharePoint\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u540c\u671f\u3059\u308b&nbsp;<\/b>\u30e6\u30fc\u30b6\u30fc  <b><\/b><\/li>\n<li>\u73fe\u5728\u306e <b>30\u4e07\u9805\u76ee<\/b> \u306e\u540c\u671f\u5236\u9650\u306b\u8fd1\u3065\u304f\u304b\u305d\u308c\u3092\u8d85\u3048\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc<\/li>\n<li><b>\u30a4\u30f3\u30b5\u30a4\u30c0\u30fc\u30ea\u30f3\u30b0<\/b>\u3092\u4f7f\u3063\u305f\u30d7\u30ec\u30d3\u30e5\u30fc\u53c2\u52a0\u8005<\/li>\n<\/ul>\n<p><i>\u4f55\u304c\u8d77\u3053\u308b\u306e\u304b<\/i><\/p>\n<ul>\n<li>\u5bfe\u8c61\u3068\u306a\u308bWindows\u30c7\u30d0\u30a4\u30b9\u306f <b>\u30011\u3064\u306e\u540c\u671f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u6700\u5927100\u4e07\u4ef6\u306e\u30a2\u30a4\u30c6\u30e0<\/b>\u3092\u540c\u671f\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u6319\u52d5\u306b\u5909\u5316\u304c\u306a\u3044\u305f\u3081\u3001\u6700\u5927 <b>30\u4e07\u4ef6<\/b> \u307e\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u65e2\u5b58\u306e\u540c\u671f\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306b\u4e2d\u65ad\u306f\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<p style=\"margin-left: 50px\"><i><b>\u6ce8: <\/b>\u5927\u91cf\u306e\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30d5\u30a1\u30a4\u30eb\u306e\u540c\u671f\u3084\u6cd5\u7684\u4fdd\u7559\u4e0b\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u306f\u307e\u3060\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306f\u3053\u308c\u3089\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u4fe1\u983c\u6027\u5411\u4e0a\u306b\u7a4d\u6975\u7684\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002<\/i><\/p>\n<p><b>\u3010\u6e96\u5099\u306e\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068\u3011<\/b><\/p>\n<p>\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ec\u30d3\u30e5\u30fc\u3092\u4f7f\u7528\u3059\u308b\u4e88\u5b9a\u304c\u306a\u3044\u5834\u5408\u306f\u3001\u4f55\u306e\u5bfe\u5fdc\u3082\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u80fd\u529b\u3092\u8a55\u4fa1\u307e\u305f\u306f\u6e96\u5099\u3059\u308b\u4e88\u5b9a\u304c\u3042\u308b\u5834\u5408:<\/p>\n<ul>\n<li>\u975e\u5e38\u306b\u5927\u898f\u6a21\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u540c\u671f\u3067\u6069\u6075\u3092\u53d7\u3051\u305d\u3046\u306a\u30c7\u30d0\u30a4\u30b9\u3084\u30e6\u30fc\u30b6\u30fc\u3092\u7279\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li>\u30c7\u30d0\u30a4\u30b9\u304c <a href=\"https:\/\/support.microsoft.com\/office\/restrictions-and-limitations-in-onedrive-and-sharepoint-64883a5d-228e-48f5-b3d2-eb39e07630fa#numberitemscanbesynced\" target=\"_blank\">  \u6700\u4f4e\u9650\u306e\u8981\u4ef6<\/a> (\u5bfe\u5fdcOS\u3001\u30e1\u30e2\u30ea\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3001\u30d7\u30ed\u30bb\u30c3\u30b5)\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li>OneDrive\u3068SharePoint\u306e\u540c\u671f\u4fe1\u983c\u6027\u306b\u95a2\u3059\u308b\u63a8\u5968 <a href=\"https:\/\/learn.microsoft.com\/sharepoint\/ideal-state-configuration\" target=\"_blank\">  \u3055\u308c\u308b\u7406\u60f3\u7684\u306a\u72b6\u614b\u8a2d\u5b9a<\/a> \u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u30d8\u30eb\u30d7\u30c7\u30b9\u30af\u30b9\u30bf\u30c3\u30d5\u304a\u3088\u3073\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306b\u3001 <b>\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ec\u30d3\u30e5\u30fc\u3067\u306fInsiders\u30ea\u30f3\u30b0\u304c\u5fc5\u8981<\/b> \u3067\u3042\u308a\u3001 <b>\u5bfe\u8c61\u5916\u306e\u30c7\u30d0\u30a4\u30b9\u306f\u73fe\u5728\u306e\u5236\u9650\u306e\u307e\u307e\u3067\u3042\u308b\u3053\u3068<\/b>\u3092\u4f1d\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<p><b>\u8a73\u3057\u304f\u306f\u3053\u3061\u3089:<\/b>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/learn.microsoft.com\/sharepoint\/sync-client-update-process#how-we-release-updates-through-multiple-rings\" target=\"_blank\">\u8907\u6570\u306e\u30ea\u30f3\u30b0\u3092\u901a\u3058\u3066\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u65b9\u6cd5 &#8211; OneDrive\u540c\u671f\u30a2\u30d7\u30ea\u306e\u66f4\u65b0\u30d7\u30ed\u30bb\u30b9 |Microsoft 365\u306b\u304a\u3051\u308bSharePoint |SharePoint |Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/sharepoint\/ideal-state-configuration\" target=\"_blank\">\u63a8\u5968\u3055\u308c\u308b\u540c\u671f\u30a2\u30d7\u30ea\u306e\u8a2d\u5b9a |Microsoft 365\u306b\u304a\u3051\u308bSharePoint |SharePoint |Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/support.microsoft.com\/office\/restrictions-and-limitations-in-onedrive-and-sharepoint-64883a5d-228e-48f5-b3d2-eb39e07630fa\" target=\"_blank\">OneDrive\u3068SharePoint\u306e\u5236\u9650\u3068\u5236\u9650 |\u305d\u306e\u4ed6\u306e\u554f\u984c |\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0 |OneDrive |\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<\/ul>\n<p><b>[\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306e\u8003\u616e\u4e8b\u9805]<\/b><\/p>\n<p>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u4e0a\u306e\u8003\u616e\u4e8b\u9805\u306f\u7279\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u5fdc\u3058\u3066\u30ec\u30d3\u30e5\u30fc\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1294528 | OneDrive sync supports up to 1 million items on Windows Classification stayInformed Last Updated 0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16148","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=16148"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16148\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=16148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=16148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=16148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}