[German]Microsoft has built an interface (API) into Windows 10 and Windows 11 that allows manufacturers of antivirus software to disable Microsoft Defender when they install it. Some people (including a blog reader) have now shown how to deactivate Windows Defender using simple software (no-defender or Defendnot).
[German]Does Microsoft face legal trouble from the CISPE, misses deadline for EU-specific cloud version? Microsoft has failed to provide an adapted Azure version for the consortium of European cloud providers by an agreed deadline. They are now granting additional two months for Microsoft to come out with a proposal, otherwise the are threatening legal action.
[German]
The Bitlocker encryption used by Microsoft for Windows for data storage devices can be bypassed by software via the Bitpixie vulnerability (CVE-2023-21563) if certain boundary conditions apply. A security researcher has shown how the master key can be read from the RAM and used for decryption within minutes without a hardware hack if pre-boot authentication is missing under Windows. The Bitpixie attack is not new, but the chosen method is possible with Windows components – and the exploit is public as a PoC. Here is an overview.
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[German]Another article on a topic that has been looming for a while. It seems that in future Microsoft wants to inform users about errors that occur with a so-called green screen. Microsoft says this is to simplify the user interface. As a user, you may then be able to evaluate green screens as well as blue screens.
[German]On May 13, 2025, Microsoft released numerous security updates for Windows, Office and other products. I promptly provided a brief overview of the vulnerabilities addressed. Security provider Tenable subsequently sent me their assessment of the vulnerabilities, which I am posting here on the blog for your information.
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[German]Update KB5058379 for Windows 10 22H2 from May 13, 2025 causes the operating system to request the Bitlocker recovery key on boot and hang on some systems. Windows 11 also appears to be affected. Microsoft has now confirmed the bug for Windows 10 and the KB5058379 update.
[German]A small addendum for administrators of Windows Server 2008/R2. There were out-of-band updates for these operating system versions on May 13, 2025 to close security gaps. And for Windows 11 24H2 Enterprise LTSC, Microsoft has probably also released a special update to close vulneratiblities.
[German]The ReFS file system introduced by Microsoft in Windows a long time ago seems to be a "stepchild" of the developers. Bugs are never fixed – even with Windows Server 2025, the May 2025 patchday has not changed the problem that ReFS-formed disks lead to high CPU/RAM utilization, making the server unusable.
[German]Update KB5058379 for Windows 10 22H2 (and also the Windows 11 pendants) from May 13, 2025 has caused issues for some users and administrators. Windows was locked on affected machines because the system requested the Bitlocker recovery key when booting. There are also reports of blue screens caused by the update.
[German]I'm posting an observation here in the blog that a reader pointed out to me – a second reader also seems to be affected. Administrators of Exchange Online tenants have noticed since around May 14, 2025 that they can no longer make changes to the mailboxes. Adjusting permissions is therefore impossible.
MVP:
2013 – 2016
WIMVP:
2017 – 2020
