Category Archives: issue

Is the Microsoft 365 email quarantine broken?

Posted on 2024-01-21 by guenni

[German]A quick question for Microsoft 365 administrators with Exchange Online tenants. A reader is struggling with the problem that mails are sorted into quarantine at his customers and asks whether this function is broken (presumably already since January 5, 2024).

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Microsoft IP addresses landed on blacklists (Jan. 2023)

Posted on 2024-01-20 by guenni

[German]Brief note to the my readers, perhaps someone has observed something similar with customers or within its enterprise environments. It seems that some IP addresses that can be assigned to Microsoft mail servers have ended up on blacklists. It may … Continue reading →

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Microsoft is working on a fix for the installation error 0x80070643 (WinRE update KB5034441)

Posted on 2024-01-19 by guenni

[German]Addendum from the January 2024 patchday, where numerous users run into install error 0x80070643 with update KB5034441. This update is intended to fix a vulnerability relating to Bitlocker encryption in the WinRE environment. There are workarounds, but they are too … Continue reading →

Posted in issue, Update, Windows | Tagged , , | 6 Comments

Windows Server 2022: Update KB5034129 kills Browser (Chrome, Edge, Firefox)

Posted on 2024-01-18 by guenni

[German]I got reports from some administrators of Windows Server 2022. After they have installed the KB5034129 update from January 9, 2024 on this OS platform may no longer be able to use a browser. This actually affects all known browsers … Continue reading →

Posted in issue, Update, Windows | Tagged , , | 5 Comments

Microsoft's PowerShell script against installation error 0x80070643 for KB5034441 (Jan. 2024)

Posted on 2024-01-15 by guenni

[German]The security update rolled out on January 9, 2024 via automatic update (e.g. KB5034441) against a BitLocker Security Feature Bypass vulnerability CVE-2024-20666 in the WinRE partition fails on many systems with the installation error 0x80070643. Somehow this is a disaster … Continue reading →

Posted in issue, Security, Update, Windows | Tagged , , , | 5 Comments

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 ...

Microsoft patches CVE-2024-21325 in Printer Metadata Troubleshooter Tool (KB5034510)

Posted on 2024-01-12 by guenni

[German]In December 2023, Microsoft released the Printer Metadata Troubleshooter Tool (KB5034510) to fix the HP Smart App issue. Shortly afterwards, following a tip from Stefan Kanthak, I reported on security problems with this tool here in the blog. Microsoft has … Continue reading →

Posted in issue, Security, Windows | Tagged , , , , | 1 Comment

Issues with Office Deployment Tool? Readiness Toolkit for Office VBA AddIns retired

Posted on 2024-01-12 by guenni

[German]I'm putting two Microsoft Office-related topics in this blog post. A reader asked me whether there are any known problems with the Office Deployment Tool – in his environment there are suddenly crashes. In addition, Microsoft is retiring the Readiness … Continue reading →

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Windows WinRE update (for Bitlocker Bypassing vulnerability CVE-2024-20666) fails with installation error 0x80070643 (Jan. 2024, KB5034441)

Posted on 2024-01-11 by guenni

[German]Microsoft has released security updates for Windows 10 and Windows 11 (and Windows Server 2016, 2019, 2022) on January 9, 2024. This update also includes a fix (according to KB5034441) to eliminate the BitLocker Security Feature Bypass vulnerability CVE-2024-20666 in … Continue reading →

Posted in issue, Update, Windows | Tagged , , , , | 6 Comments

Outlook: Desktop app does not show images; meeting text read-only (fix for August 2023 update issue)

Posted on 2024-01-07 by guenni

[German]With the August 2023 security update, Microsoft closed the Outlook spoofing vulnerability CVE 2023 36893. As a result, the desktop application was no longer able to display images in meeting elements. In addition, the meeting text has been read-only since … Continue reading →

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New Outlook client: Extended test in January 2024 for enterprises

Posted on 2024-01-06 by guenni

[German]Microsoft plans to expand the test of the new Outlook app in the corporate environment in January 2024. The option to switch will be offered in the "semi-annual channel" of Microsoft Office 365. Administrators who do not wish to switch … Continue reading →

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