{"id":38969,"date":"2025-08-20T23:42:29","date_gmt":"2025-08-20T21:42:29","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=38969"},"modified":"2025-08-21T16:06:31","modified_gmt":"2025-08-21T14:06:31","slug":"outlook-new-no-longer-starts-after-update-c-runtime-problem","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2025\/08\/20\/outlook-new-no-longer-starts-after-update-c-runtime-problem\/","title":{"rendered":"Outlook New no longer starts after update (C-Runtime problem)"},"content":{"rendered":"

[German<\/a>]A blog reader reports a strange problem. Outlook New is used as an app there. Since the app automatically restarted after an update (must have been to version 1.2025.813.500), it can no longer be opened. It looks as if the VC runtime is causing problems.<\/p>\n

<\/h2>\n

A reader report on the problem<\/h2>\n

\"\"Blog reader Sebastian works in corporate IT, where Microsoft's Outlook New is used as an app by users. On August 19, 2025, he contacted me in the late afternoon by email with the subject line \"Outlook New no longer starts after an automatic restart of the app.\" In his email, he wrote: \"Since this morning, Outlook New has stopped working for some users after an automatic update.\"<\/p>\n

Martin Geu\u00df reported on this update in his articl Neues Outlook f\u00fcr Windows: Das August-Update bringt neue Offline-Funktionen und mehr<\/a>\u00a0on August 18, 2025. According to my information, the rollout of the update has been stopped.<\/p>\n

Error in the event log<\/h2>\n

The reader then checked the event log of the Outlook New app and was shown the log attached at the end of the article. The event log refers to ucrtbase.dll, which comes to the system via the Visual C++ runtime.<\/p>\n

IT then unsuccessfully attempted to use an older version of Outlook New in the hope that the correct runtime would be delivered. But this was unsuccessful. Even reinstalling the VC++ Redist components did not change anything.<\/p>\n

The reader concluded: \"I hope that Microsoft will fix it overnight.\" My question is whether this is an isolated case or whether more readers are affected?<\/p>\n

Further hits<\/h2>\n

After some searching, I came across yesterday's post New Outlook App 1.2025.813.500 causes crashes<\/a> in the Eleven forum. There, the person affected refers to the Microsoft post New Outlook doesn't start anymore<\/a>\u00a0from August 19, 2025. The solution provided there is to navigate to the %localappdata%\\microsoft<\/em> folder in Explorer and delete the Olk<\/em> and OneAuth<\/em> subfolders. Then open the new Outlook app and reset the account.<\/p>\n

This helps some people affected by the problem. However, this approach did not work for the person mentioned above, who had to switch to the classic Outlook application.<\/p>\n

Issue solved<\/h2>\n

Addendum: The issue has been solved by an update to version ist 1.2025.818.302 on August 19, or 20, 2025.<\/p>\n

\n

The log file from a German system<\/p>\n

--- Auszug aus dem Ereignisprotokoll ---\r\n\r\nFehlerhafter Anwendungsname: olk.exe, Version: 1.2025.813.500, Zeitstempel: 0x689d590e\r\n\r\nFehlerhafter Modulname: ucrtbase.dll, Version: 10.0.26100.4768, Zeitstempel: 0xdbb54def\r\n\r\nAusnahmecode: 0xc0000409\r\n\r\nFehleroffset: 0x00000000000a4ace\r\n\r\nFehlerhafte Prozess-ID: 0x119B0\r\n\r\nFehlerhafte Anwendungsstartzeit: 0x1DC1103E5E36718\r\n\r\nFehlerhafter Anwendungspfad: C:\\Program Files\\WindowsApps\\Microsoft.OutlookForWindows_1.2025.813.500_x64__8wekyb3d8bbwe\\olk.exe\r\n\r\nFehlerhafter Modulpfad: C:\\WINDOWS\\System32\\ucrtbase.dll\r\n\r\nBerichts-ID: 1ecd9334-8cb6-4160-95f9-74e45d4cfef2\r\n\r\nVollst\u00e4ndiger Name des fehlerhaften Pakets: Microsoft.OutlookForWindows_1.2025.813.500_x64__8wekyb3d8bbwe\r\n\r\nFehlerhafte paketbezogene Anwendungs-ID: Microsoft.OutlookforWindows\r\n\r\n--- Auszug aus dem Ereignisprotokoll ---<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
[German]A blog reader reports a strange problem. Outlook New is used as an app there. Since the app automatically restarted after an update (must have been to version 1.2025.813.500), it can no longer be opened. It looks as if the … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[463,11,22],"tags":[78,47,2881,195],"class_list":["post-38969","post","type-post","status-publish","format-standard","hentry","category-issue","category-office","category-update","tag-app","tag-issue","tag-new-outlook","tag-update"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/38969","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=38969"}],"version-history":[{"count":3,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/38969\/revisions"}],"predecessor-version":[{"id":38973,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/38969\/revisions\/38973"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=38969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=38969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=38969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}