Windows/Exchange Server October 2026 issue: Analysis and Workarounds

Posted on 2026-10-17 by guenni

Exchange Logo[German]The security updates for Windows Server released by Microsoft on October 13, 2026, are also affecting Microsoft Exchange Server. Reports on my German blog and across the internet indicate that database services stop working approximately 24 hours after the updates are installed, and email and OWA access become unresponsive. Microsoft has acknowledged the issue and is investigating it. A German blog reader made an analysis that sheds light on the underlying causes. In addition to periodic server reboots, there appears to be an unofficial workaround involving a registry edit to prevent the database error. A PowerShell script might help also.

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Windows Sept. 2026 RDS Bug: Microsoft Provides a KIR Solution

Posted on 2026-09-14 by guenni

Windows[German]The Microsoft security updates for Windows released on September 8, 2026, cause RDP connections to stop working after the patches are installed. Users are logged out and can no longer log in. Microsoft has now confirmed this; all versions of Windows are affected. In Microsoft's non-public admin portal, the company has provided more details, known issues, and rollback solutions (KIR).

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BGP.Exchange Website Compromised (Sept. 12, 2026)

Posted on 2026-09-12 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]A quick update that a blog reader brought to my attention. BGP.Exchange has been hacked, and the site has been compromised. As of September 12, 2026, the website has been defaced, and it appears that spam is also being sent through their email system. Here's a brief overview of the situation.

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Windows: Remote Desktop Services (RDS) Issues caused by September 2026 Updates Confirmed

Posted on 2026-09-12 by guenni

Windows[German]The Microsoft security updates released on September 8, 2026, cause RDP connections to stop working after the patches are installed. Users are logged out and can no longer log in. Microsoft has now confirmed this; all versions of Windows are affected.

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Microsoft Office: September 8, 2026 Update causes (Excel) copy & paste issue

Posted on 2026-09-10 by guenni

[German]The Microsoft security updates released for Office applications on September 8, 2026, are causing serious collateral damage. In Excel, it is no longer possible to select and copy anything.

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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 ...

Are Vibe-Coding and AI-Slop the cause of Windows 11 issues (desktop background, mouse pointer, etc.)?

Posted on 2026-09-04 by guenni

Windows[German]The preview update KB5120998, released by Microsoft on August 27, 202 for Windows 11 24H2–25H2, is causing several issues. After installing the update, users have reported issues with the mouse pointer and the loss of the desktop background, among other issues. Microsoft has now acknowledged that the issues do not appear to affect non-English versions of Windows 11. Based on the information available to me, I wonder if we are now seeing the consequences of vibe coding and the use of AI at Microsoft.

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SonicWall SMA1000 Series: Critical Vulnerability Exploited (Sept. 2026)

Posted on 2026-09-02 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Since September 1, 2026, SonicWall, CERT Austria, and CERT Germany have been warning about two critical vulnerabilities (CVE-2026-83548, CVE-2026-83549) in the SMA1000 Series from SonicWall. Unpatched instances of the Secure Mobile Access (SMA) 1000 Series are currently under attack. However, security updates in the form of hotfixes are available for the affected SMA1000 Series appliances.

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Edge WebView2 Runtime (Build 152.0.4191.53): No mouse pointer in the Veeam B&R console or Care Center

Posted on 2026-09-02 by guenni

Edge[German]Microsoft provides the Edge WebView2 runtime for Windows, which is used by applications. A reader informed me that, since installing Build 152.0.4191.53, the mouse pointer is no longer displayed in the Veeam B&R console or in the "Care Center" used there. However, there is a workaround.

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EX1464935: M365 Outage Due to Forgotten Certificate Renewal (August 31, 2026)

Posted on 2026-08-31 by guenni

[English]A quick update and a question about whether anyone else is affected. A reader informed me that he has recently been receiving an increasing number of reports from customers about Microsoft 365 outages. Microsoft appears not to have renewed a certificate that has expired. At least, that's what the error messages suggest. Microsoft has confirmed at least one outage under EX1464935.

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Windows 11 24H2/25H2: Preview Update KB5120998 Causes Mouse Cursor Issues (August 27, 2026)

Posted on 2026-08-28 by guenni

Windows[German]On August 27, 202, Microsoft released preview update KB5120998 for Windows 11 24H2–25H2. Although many fixes and improvements were announced, there are now increasing reports that this preview update causes the mouse cursor to malfunction in Windows and removes the desktop background wallpaper. Affected users are left with only an outdated version of the mouse cursor. You should refrain from installing the preview update for now. But there appears to be a workaround.

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