Thunderbird 91.5.0

[German]Small addendum: The developers of the Thunderbird email client have released Thunderbird 91.5.0 on January 11, 2022. This is a maintenance update for the 91 development branch, which makes numerous fixes. Here is a brief overview.

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Windows Server 2012/R2: January 2022 Update KB5009586 bricks Hyper-V Host

Windows[German]Microsoft Hyper-V users running Windows Server 2012/R2 should be cautious about installing update security update KB5009586 or KB5009624 for Windows Server 2012/R2. The security updates released on January 11, 2022 have several unpleasant collateral damages at once. After installing the security updates, the Hyper-V host (Windows Server 2012, Windows Server 2012 R2 or Hyper-V Server 2012) can no longer be started. Here's an overview of what's currently known about this in reader comments from the blog and elsewhere.

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Posted in Security, Update, Virtualization, Windows | Tagged , , , | 31 Comments

Windows VPN connections (L2TP over IPSEC) broken after January 2022 update

Windows[German]The security updates for Windows released on January 11, 2022 have a very unpleasant collateral damage. All users who rely on VPN connections with L2TP over IPSEC will no longer work after installing the updates in question. Here is an overview of what is currently known about this from reader comments from the blog and elsewhere.

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Windows Server: January 2022 security updates are causing DC boot loop

Windows[German]I'll pull it out separately as a blog post. Administrators of Windows Domain Controllers should be careful about installing the January 2022 security updates. I have now received numerous reports that Windows servers acting as domain controllers will not boot afterwards. Lsass.exe (or wininit.exe) triggers a blue screen with the stop error 0xc0000005. It can hit all Windows Server versions that act as domain controllers, according to my estimation.

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Patchday: Updates for Windows 7/Server 2008 R2 (January 11, 2022)

Update[German]On January 11, 2 Microsoft has released various updates for Windows 7 SP1 systems that are still in ESU support. Also with ESU Bypass v11 the whole thing still works. However, these security updates are also available for Windows Server 2008 R2 with ESU support. Here is some information about the Monthly Rollup and Security only Updates for this operating system.

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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 ...


Patchday: Windows 11 Updates (January 11, 2022)

Windows[German]On January 11, 2022 (second Tuesday of the month, Patchday at Microsoft), Microsoft has also released a cumulative update for Windows 11, which was released on October 5, 2021. The update is supposed to fix various issues. Here are some details about this update.

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Patchday: Windows 10 Updates (January 11, 2022)

Windows[German]On January 11, 2022 (second Tuesday of the month, Patchday at Microsoft), various cumulative updates for the supported Windows 10 builds (from the RTM version to the current version) were released. Here are some details about each of the Patchday security updates.

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Posted in Security, Update, Windows | Tagged , , , , | 4 Comments

Security updates for Exchange Server (January 2022)

Update[German]Microsoft has released security updates for Exchange Server 2013, Exchange Server 2016 and Exchange Server 2019 as of January 11, 2022. These updates are required to address vulnerabilities reported by external security partners and found through Microsoft's internal processes. The updates apply to the Exchange Server on-premises installations listed below.

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Patchday: Windows 8.1/Server 2012 R2 Updates (January 11, 2022), boot loop reported

Windows[German]As of January 11, 2022, Microsoft has released various updates for Windows 8.1. These security updates are also available for Windows Server 2012 R2. I have already received information from a blog reader that a boot loop has occurred with domain controllers. Here is some information on the Monthly Rollup and Security only updates for this operating system.

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Posted in issue, Security, Windows | Tagged , , , | 24 Comments

Microsoft Security Update Summary (January 11, 2022)

Update[German]On January 11, 2022, Microsoft released security updates for Windows clients and servers, for Office, etc. – as well as for other products – were released. Below is a compact overview of these updates that were released on Patchday.

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