Tag Archives: Outlook

New Outlook app drops login error 0x80049dd3

[German]Since December 6, 2025, some users are reporting login issues caused by Microsoft's new Outlook desktop app for Windows. The app refuses a loging and drops an error 0x80049dd3. Although Microsoft claimed they have fixed it the other day, it … Continue reading

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Windows 11 24H2 with Outlook and Exchange: AD user accounts are suddenly blocked

[German]Recently a blog reader left a comment within this blog, dealing with an issue in Windows 11 24H2 combined with Microsoft Outlook and Exchange. He noticed that user accounts in the Active Directory are being blocked suddenly on a recurring … Continue reading

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Migration to new Outlook app for enterprise user in April 2026

[German]Microsoft actually wanted to start migrating business users to the new Outlook app at the beginning of 2025. Redmond has now announced that this rollout will not take place until April 2026 for business users with an Microsoft 365 Enterprise … Continue reading

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Prevent migration from Classic Outlook to New Outlook

[German]Microsoft plans to switch certain Microsoft 365 user groups from Outlook Classic to the new Outlook app from the beginning of 2025. Some people has developed remediation solutions to prevent this. Here is a solution I came across yesterday. Advertising

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Windows 11 24H2: Outlook now with GMail Workspace Syc compatible

[German]Google has updated its GMail Workspace Sync so that the program is compatible with Windows 11 24H2. This means that Microsoft Outlook can be used with Google Workspace under this operating system. The fix was announced on December 5, 2024, … Continue reading

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...


Windows: Mail app will no longer work from December 31, 2024

[German]Brief information for users of Windows 10 (and possibly Windows 11) who are still using the "Mail and Calendar" app as their email client. Microsoft has started the transition to the new Outlook app. Anyone holding on to the old … Continue reading

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Script to prevent forced switch from Classic Outlook to New Outlook

[German]Microsoft wants to switch certain Microsoft 365 user groups from Outlook Classic to the new Outlook app from the beginning of 2025. A reader has written a "remediation script" to prevent this. I'll present it here, maybe someone can use … Continue reading

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Migration from Outlook Classic to New Outlook starts for business customers at the beginning of 2025

[German]Microsoft plans to migrate business customers from classic Outlook to the new Outlook app from beginning of 2025. This has been announced in the Microsoft 365 Admin Center (MessageID MC926895). However, administrators can prevent this via a policy. Advertising

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iOS Outlook app: Sync to Exchange broken (Oct 25, 2024)

[German]Since October 25, 2024, there seems to be a fault with Microsoft Exchange (on-premises), which means that the Outlook app for iOS no longer performs synchronization. I have received a user report and the problem is being discussed on the … Continue reading

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Outlook 365: Issues sending mails (Oct 22, 2024) and more bugs

[German]Quick question for administrators and users of Microsoft 365 installations. Have there been problems with sending emails since October 22, 2024? I have received corresponding reports. There are also a number of known and unknown problems for October 2024. I … Continue reading

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