{"id":37561,"date":"2025-04-01T00:16:30","date_gmt":"2025-03-31T22:16:30","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=37561"},"modified":"2025-03-31T23:44:59","modified_gmt":"2025-03-31T21:44:59","slug":"new-outlook-app-is-rolled-out-in-ms365-changes-to-blocking","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2025\/04\/01\/new-outlook-app-is-rolled-out-in-ms365-changes-to-blocking\/","title":{"rendered":"New Outlook app is rolled out in MS365, changes to blocking"},"content":{"rendered":"

[German<\/a>]Microsoft started rolling out the new Outlook app in Microsoft 365 a few days ago. There is also a support article regarding changes to deactivating the new Outlook app.<\/p>\n

<\/p>\n

Rollout of the new Outlook app<\/h2>\n

\"\"I announced in various articles here in the blog that Microsoft is gradually starting to migrate Outlook Classic to the new Outlook app (see e.g. Migration from Outlook Classic to New Outlook starts for business customers at the beginning of 2025<\/a>).<\/p>\n

Now neowin.net has noticed<\/a> that Microsoft has started the rollout for Microsoft 365 and mentioned that in its support article Install new Outlook with a new Microsoft 365 deployment<\/a>. Microsoft writes that starting with version 2502, new deployments of Microsoft 365 desktop client applications on Windows devices will include the new Outlook app by default. Administrators can choose whether they want to exclude the classic or the new Outlook or install both side by side.<\/p>\n

New Outlook app: Changes for activation\/deactivation<\/h2>\n

On March 27, 2025, Microsoft published the article MC922623 – Microsoft new Outlook for Windows and Outlook for the web: Changing how to disable\/enable<\/a>, which deals with changes to the activation\/deactivation of the new Outlook app<\/p>\n

It states that Microsoft is changing how to enable\/disable the new Outlook for Windows and Outlook for the web. The rollout will start at the end of April 2025 (was once planned for February 2025) and will be completed by mid-May 2025.<\/p>\n

Microsoft is changing the CASMailbox -OWAEnabled <\/em>parameter, which enables or disables access to user mailboxes with Outlook for the Web (formerly known as Outlook Web App or OWA), to block only Outlook for the Web and not affect the behavior of the new Outlook for Windows.<\/p>\n

Administrators can manage new Outlook for Windows with the CASMailbox-OneWinNativeOutlookEnabled<\/em> policy. To summarize: The CASMailbox-'OWAEnabled'<\/em> parameter will only block Outlook for the Web, while the policy<\/p>\n

CASMailbox-'OneWinNativeOutlookEnabled'<\/em><\/p>\n

will manage the new Outlook for Windows. No administrative action is required before the rollout.<\/p>\n

Similar articles<\/strong>
\nMicrosoft 365: First Windows Mail and Calendar users will be migrated to the new Outlook at the end of August 2023<\/a>
\nMigration to new Outlook app for enterprise user in April 2026<\/a>
\nMigration from Outlook Classic to New Outlook starts for business customers at the beginning of 2025<\/a>
\nPrevent migration from Classic Outlook to New Outlook<\/a>
\nScript to prevent forced switch from Classic Outlook to New Outlook<\/a>
\nTrouble with the new Outlook app: forced update and sluggish behavior?<\/a>
\nRoad map for new Outlook app; classic Outlook supported up to 2029<\/a>
\nWindows 10 users are being forced to use the new Outlook app<\/a>
\nWindows 10 gets new Outlook app with preview update Jan. 2025 and update Feb. 2025<\/a><\/p>\n

Beware: New Outlook app transfers access data to Microsoft<\/a>
\nNew Outlook app: Microsoft's statement on transferred credentials and content<\/a>
\nNew Outlook for Windows 11: Adding of business accounts denied due to missing licensing<\/a>
\nNew Outlook: Microsoft will definitely not support COM add-ins<\/a>
\nNew Outlook app: \"Monitoring and surveillance tool for targeted advertising\"<\/a>
\nOutlook Classic: Again forced update to New Outlook app<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

[German]Microsoft started rolling out the new Outlook app in Microsoft 365 a few days ago. There is also a support article regarding changes to deactivating the new Outlook app.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[78,395],"class_list":["post-37561","post","type-post","status-publish","format-standard","hentry","category-office","tag-app","tag-outlook"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/comments?post=37561"}],"version-history":[{"count":4,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37561\/revisions"}],"predecessor-version":[{"id":37565,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37561\/revisions\/37565"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=37561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=37561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=37561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}