Microsoft Archives

Winsage

October 20, 2026

Microsoft Confirms October Windows Updates Can Break Exchange Server Email Services

Microsoft has acknowledged that the Windows Server security updates released on October 13, 2026, may disrupt Exchange Server email services, affecting on-premises systems running Exchange Server 2016, 2019, and the Subscription Edition. The disruptions can include blocked webmail access and undelivered messages. Microsoft has identified four specific Windows updates linked to these issues: KB5126646 for Windows Server 2025, KB5126655 for Windows Server 2022, KB5126651 for Windows Server 2019, and KB5126868 for Windows Server 2016. Symptoms may include inability to log into Outlook on the web, messages stuck in the Outbox, increased mail queues, and failed mailbox access. A critical error to monitor is MapiExceptionMdbOffline, and affected systems may log Event ID 1006. The October updates introduced a default limit of 512 simultaneous Endpoint Lookup calls, which can be exceeded under heavy Exchange workloads. Microsoft has provided a registry workaround to increase this limit and suggests monitoring for recurring failures. The disruption coincides with the end of the final paid update period for Exchange 2016 and 2019, with future updates limited to the Subscription Edition.

Winsage

October 20, 2026

How to optimize your Windows PC for excellent performance

Personal computers have improved in speed and performance due to advancements in hardware and software, but performance can still vary based on configurations and usage. The latest version of Windows may experience occasional lags even with high-end hardware. To optimize Windows PCs, users should ensure they have the latest updates installed, as these enhance performance and security. Regularly updating drivers and applications is also important. Freeing up disk space is crucial for optimal performance, as a cluttered hard drive can slow down the system. Users should monitor their disk space and delete unnecessary files. Malware can hinder performance, so running antivirus scans is essential if issues arise. Adjusting power settings to "Best Performance" can improve speed, particularly when the device is plugged in. Pausing OneDrive syncing can alleviate resource consumption during uploads. Upgrading to a solid-state drive (SSD) can significantly enhance performance, as SSDs offer faster boot times and application loading. Increasing RAM capacity allows for better handling of simultaneous processes. Disabling unnecessary startup programs can free up system resources, and adjusting Windows appearance settings can conserve RAM. Uninstalling unused applications can also improve performance. For gamers, enabling Game Mode prioritizes system resources for gaming. Regularly restarting the PC helps maintain optimal performance by closing background processes and refreshing memory.

Tech Optimizer

October 20, 2026

Switch Antivirus Software: 13 Steps, Zero Gaps [2026]

ESET rebranded its home security lineup in 2026, introducing ESET HOME Security Essential and Premium, and added automatic ransomware backup to its Ultimate plan. The NOD32 engine was updated to version 19.2 on August 27, 2026. IPVanish launched a next-generation antivirus product on October 7, 2026, built on the VIPRE engine and integrated into its VPN application. Many Australians are reconsidering their antivirus options due to discrepancies between current product names and older installations. A comprehensive 13-step guide has been developed to facilitate the transition to new antivirus software, addressing potential risks such as performance issues from running multiple engines, improper uninstallation, and loss of license keys. In 2026, ESET introduced features like a Website Security Inspector and a Microphone Monitor, while IPVanish's antivirus includes real-time anti-ransomware protection and machine-learning threat detection. Security.org's 2025 report indicated that 84% of users made no changes to their antivirus software over the past year, with many only reconsidering when faced with price increases or product discontinuations. The choice between paid and free antivirus solutions is significant, with 54% of third-party users paying for their software. ESET's Ultimate tier is the only one that includes ransomware backup features. Before switching antivirus products, users should ensure they are running compatible operating systems, have administrator access, document current and new antivirus version numbers, and have a stable internet connection. A PowerShell command can check the current antivirus status. Steps for migration include auditing current antivirus features, choosing a suitable replacement, exporting license keys, and using official removal tools to uninstall the old software. After installation, users should verify real-time protection is active and rebuild exclusions and scan schedules. Common pitfalls during migration include failing to uninstall the old antivirus completely, forgetting to disable tamper protection, and losing exclusion lists. For mobile devices, permissions from the old antivirus must be cleared to avoid conflicts. Advanced users managing multiple devices may benefit from staggering migrations and checking for known vulnerabilities in the antivirus products. A PowerShell script can be created to log the antivirus state before and after migration.

Tech Optimizer

October 20, 2026

Is paid antivirus actually a waste of money for your PC in 2026?

Windows has evolved from being a target for malware to having robust built-in protection, particularly through Microsoft Defender Antivirus, which has improved from a score of 0.5 in 2015 to a perfect score of six in 2026, detecting 100% of threats. Microsoft Defender operates seamlessly in the background, automatically scanning files and applications. Third-party antivirus solutions, while offering additional features like anti-scam tools and VPNs, may not be necessary for all users, especially since many browsers have built-in protections. Users are encouraged to reassess the necessity of paid antivirus subscriptions, as free versions can be intrusive and may lead to conflicts with Defender. Performance tests indicate that third-party antivirus solutions can impact game performance, with Malwarebytes Premium showing a notable reduction in frame rates during scans. For most users, Windows' built-in protection is likely sufficient unless specific additional features are needed.

Winsage

October 20, 2026

Microsoft: October Windows Server updates break Exchange sign-in, mail flow

Microsoft has acknowledged that the latest Windows Server security updates are causing sign-in and mail delivery issues for certain Exchange Server systems, particularly affecting users of Windows Server 2019 and beyond. Affected customers report encountering a "MapiExceptionMdbOffline" error and Event ID 1006 in application logs. The October 2026 Windows security update has introduced a default limit on memory allocated to Endpoint Mapper, which may be insufficient under heavy load for Exchange Server workloads. Microsoft clarified that the reported issues are not related to the October 2026 Exchange server security updates and advised against uninstalling them. A temporary workaround involves modifying a registry key to increase the Endpoint Mapper memory limit. Additionally, Microsoft announced it would cease shipping extended security updates for Exchange 2016 and 2019 this month.

Winsage

October 20, 2026

I needed to see the new Windows 11 Photos app in action to fathom how fast it is — it’s like switching from dial-up to broadband

Microsoft's Photos app is undergoing a significant transformation, introducing a revamped Gallery, Editor, and Viewer. The new Editor is built using WinUI 3, enhancing usability and performance. It features advanced editing capabilities, including Relight, which allows users to add up to three light sources to photos. The app now supports editing and saving HEIC and WebP image formats and preserves the color and contrast of HDR photos during editing.

Winsage

October 20, 2026

ReactOS reaches major milestone with NTFS install support

ReactOS has integrated the ability to install directly onto an NT File System (NTFS) drive partition, marking a significant advancement as it moves closer to its beta release. Previously, users had to maintain a FAT32 partition for installations. The ReactOS team aims for binary compatibility with Windows Server 2003, making NTFS support a crucial milestone. However, the new driver currently lacks essential features like caching, journaling, and robust security support, which could affect performance and security. Users are advised to be cautious and aware of potential bugs as they explore this new functionality.

Winsage

October 19, 2026

Why Windows 11 still won’t let you name a file CON, and Microsoft’s explanation goes back to MS-DOS

In Windows 11, certain names such as CON, PRN, AUX, and NUL are reserved as they correspond to specific devices, preventing users from naming folders with these terms. These reserved names date back to DOS 1.0, where folders did not exist. The names have specific functions: CON refers to the console, PRN to the printer, AUX to an auxiliary device, and NUL to a null device that discards output. Attempts to rename a folder to any of these names result in an error message indicating the device name is invalid. Adding extensions to these names does not bypass the restriction, as names like NUL.txt are still treated as equivalent to NUL. Despite some changes in Windows 11, the prohibition against using these reserved names for files or folders remains in place due to legacy compatibility concerns.

Winsage

October 19, 2026

Microsoft Restores App-V Server Support Through 2029

Microsoft has reinstated the App-V Server into its extended support program, which will last until October 9, 2029. The original retirement date was set for April 2026, but the extension is aimed at supporting organizations still using App-V Server for Win32 applications. During this extended period, organizations will receive essential security updates, although no new features or active development will be provided for App-V Server. Microsoft is promoting a transition to Azure Virtual Desktop App Attach and the MSIX packaging format as the future model for application delivery.

Winsage

October 19, 2026

It’s not Windows 12, but Microsoft just shared these wallpapers celebrating 12 years of Windows Insiders

Microsoft celebrated the 12th anniversary of the Windows Insider Program by releasing a collection of special wallpapers inspired by the Windows Bloom wallpaper from Windows 11. The wallpapers come in various colors, including blue, white, green, orange, and purple, with dark-theme options available. Insiders received a download link and an email from Microsoft containing these wallpapers. Microsoft expressed gratitude to Insiders with a message and noted that the program had been refreshed earlier this year, leading to an increase in the frequency of Insider builds. Additionally, Windows Insider meetups were reintroduced, with events held in cities like Seattle, New York City, Hyderabad, Taipei, San Francisco, and London. Microsoft has also improved the Xbox platform based on community feedback, highlighting the importance of maintaining engagement with Insiders for the benefit of all Windows users.