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Tag Archives: Outlook
Outlook Classic: Bug hides mouse pointer (also in other MS 365 apps)
[German]Outlook Classic users are once again plagued by a silly bug that Microsoft has built into the software. The bug causes the mouse pointer to disappear unintentionally. It can also affect OneNote or other MS 365 apps. Microsoft has finally … Continue reading
MC1234566 – Outlook "Contact Masking" will be discontinued on March 31, 2026
[German]Brief information for users and administrators who use Outlook 365. Microsoft recently announced that it will discontinue "contact masking" in Outlook on March 31, 2026.
Outlook add-in steals ~ 4,000 login and payment details
Add-ins are ubiquitous as "software helpers." But there is a constant risk that such add-ins will suddenly have malicious functions implanted in them. A once popular Outlook add-in stole 4,000 login details and payment details after the developer abandoned the … Continue reading
Microsoft Outlook: SVG images blocked; inline images not displayed
[German]By mid-October 2025, Microsoft will complete a security measure in Outlook that blocks SVG image files used in attacks. And one reader complained that certain images have not been displayed in his Outlook Classic for years.
Outlook Light app will be discontinued
[German]A quick update for users of Microsoft's Outlook Lite app. Redmond has just announced that the app will be discontinued. It will be shut down on October 6, 2025.
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 ...
Outlook Classic issue: Shows suddenly an "Add a service" popup and ask for credentials (June 2025)
[German]A blog reader told me about a strange problem in Microsoft Outlook Classic. Since June 13, 2025, Outlook shows a few minutes after start a dialog box "Add service" and disables the internet connection. It affects only single clients in … Continue reading
Outlook crashes caused by June 2025 Updates confirmed with workaround
[German]The June 2025 security updates for Microsoft Office cause Microsoft Outlook Classic to crash in some versions. At the weekend, Microsoft confirmed these Outlook crashes and published a workaround. I'll put this information in a separate article.
Office-Updates June 2025: Outlook crashes, documents can't be opened
[German]The June 2025 security updates for Microsoft Office fixes critical vulnerabilities, but appear to cause serious problems for some users in corporate environments. Document files can no longer be opened in the Office applications. There are also reports of crashes … Continue reading
Posted in issue, Office, Security, Update
Tagged issue, Office, Outlook, Patchday 6.2025, Update
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New Outlook: And non explainable appointment cancellations in the calendar
[German]In addition to the issue just mentioned in the article Bug in Office 365 v2505? Mails are lost in cached mode, there is another inconsistency that a user has pointed out to me: Non explainable appointment or meeting cancellations in … Continue reading
Bug in Office 365 v2505? Mails are lost in cached mode
[German]I got reports from German readers who use Office version 2505 in a Click-2-Run version (e.g. Office 365). They are losing mails in Outlook 365 version 2505 when moving them to subfolders when cached mode is activated.