Let's Encrypt withdraws certain certificates on Jan. 28, 2022

Posted on 2022-01-27 by guenni

Stop - Pixabay[German]Brief information for administrators who use certificates from the non-profit certification authority Let's Encrypt. Let's Encrypt will revoke certain certificates as of 28. Jan. 2022. The background for the revoke of the max. 90 days old certificates is a bug that was noticed recently. No idea how many websites and services use these free Let's Encrypt certificates. Those who use Let's Encrypt certificates should at least check if they are affected.

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Do Windows updates bricks Lenovo computers?(Jan. 2022)

Posted on 2022-01-27 by guenni

Windows[German]Today I have a quick question for users and service providers who own or support Lenovo devices. I have seen reports that these devices (especially in the consumer sector) suddenly no longer boot after a Windows update (possibly January 2022 update). I don't have a lot of information yet – but I'll summarize what I've come across.

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PDF printing issues with Adobe Reader under Windows (Jan. 2022)

Posted on 2022-01-26 by guenni

Windows[German]It seems that the Adobe Reader DC is causing printin^g issues in Windows since January 2022. I received  reports that there have been issues with printing PDF documents since about 2 weeks. It is not an isolated case, because the information came from a company environment, where various users are affected by this effect. There are other readers confirming this behavior.

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Windows 11 / Windows Server 2022 Preview Update (Jan. 25, 2022)

Posted on 2022-01-26 by guenni

Windows[German]Microsoft has released some optional, cumulative (preview) updates on January 25, 2022 (D-Week). These are intended to fix various bugs in Windows 10, Windows 11 and in the corresponding Windows Server versions. Below, I provide an overview regarding these updates for Windows 11 and Windows Server 2022.

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Windows 10 / Windows Server Preview Update (Jan. 25, 2022)

Posted on 2022-01-26 by guenni

Windows[German]Microsoft has released some optional, cumulative (preview) updates on January 25, 2022 (D-Week). These are intended to fix various bugs in Windows 10, Windows 11 and in the corresponding Windows Server versions. Below, I provide an overview regarding these updates for Windows 10 and the Windows Server versions in question.

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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 ...

Status of January 2022 security updates from Microsoft (2022/01/25)

Posted on 2022-01-25 by guenni

Update[German]We are in the so-called D-Week, regarding updates by Microsoft for products like Windows or Office. Whether there are (preview) updates today that anticipate the patches for February 2022, I don't know. But after there were massive problems with the security updates of January 11, 2022, which should be fixed by correction updates, I put together the status as of Jan. 25, 2022.

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Trend Micro Worry Free Business Security Critical Patch 2380 and free disc space

Posted on 2022-01-25 by guenni

Update[German]Security vendor Trend Micro has released a critical update 2380 for its Worry Free Business Security (WFBS). The patch is intended to fix a security issue in a component that makes the antivirus solution vulnerable to attack. What it doesn't reveal, however: To install this critical patch, there must be at least 13 gigabytes of hard drive space on the system drive.

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Windows January 2022 updates bricks Active Directory Federation Services

Posted on 2022-01-25 by guenni

Windows[German]It seems, that the January 2022 security updates like KB5009557 bricks Active Directory Federation Services ADFS-Farm-Servers. I receive a report, where update KB5009557 breaks LDAP queries to domain controllers from a ADFS Farm Server. Here are a few details about that issue.

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Critical vulnerability CVE-2021-44738 in Lexmark printers (Jan. 2022)

Posted on 2022-01-25 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]A critical vulnerability CVE-2021-44738 has been found in the PostScript interpreter of various Lexmark printers. The manufacturer warns about this vulnerability, which allows remote code execution, in a security advisory and provides a firmware update to close the vulnerability. Here is an overview of this vulnerability.

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Windows 10/11: Which group policies should no longer be used in patch management

Posted on 2022-01-24 by guenni

Windows[German]Today another topic for administrators of Windows systems (Windows 10 and Windows 11) to which Microsoft has commented the days. It is about group policies that can be used in these clients to manage restrictions. At one point it looks like the group policies diverge between Windows 10 and Windows 11. Also, Microsoft recently explained which Group Policies should no longer be used for updates because the conditions have changed since Windows 10 version 1507.

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