validation Archives

Winsage

February 28, 2026

Microsoft testing Windows 11 batch file security improvements

Microsoft has released new Windows 11 Insider Preview builds that enhance security and performance for batch files and CMD scripts. IT administrators can now activate a secure processing mode by adding the LockBatchFilesInUse registry value, which prevents modifications to batch files while they are running. This update also requires signature validation only once per batch file, improving performance. Additionally, the Shared Audio feature has been refined, allowing users to share audio across multiple devices with individual volume sliders and a new taskbar indicator. The feature now supports more Bluetooth LE Audio accessories, including Samsung Galaxy Buds 4, Sony WF-1000XM6, and Xbox Wireless Headset. These updates are available for Windows Insiders in the Beta and Dev channels with specific preview builds installed.

Winsage

February 27, 2026

Announcing Windows 11 Insider Preview Build 26220.7934 (Beta Channel)

Windows 11 Insider Preview Build 26220.7934 (KB5077242) has been released to the Beta Channel. Key updates include: - Enhanced security and performance for batch files with a new secure mode that ensures batch files remain unchanged during execution, improving performance and security. - Shared audio feature now includes individual volume sliders for each listener and a taskbar indicator for ongoing audio sharing sessions. - A new command for Narrator users allows reading the status bar contents in applications like Word and Excel. - The rollout of improved taskbar animations has been temporarily paused. - Reliability improvements for removing Windows Update files and windows.old files. - Enhanced typing reliability with the ADLaM keyboard. - The Paint app has introduced a freeform rotate feature for shapes, text, and selections. Insiders can access these updates through Settings > Windows Update, and features may be gradually rolled out using Controlled Feature Rollout technology. A desktop watermark is displayed for Windows Insider pre-release builds.

Winsage

February 27, 2026

Announcing Windows 11 Insider Preview Build 26300.7939 (Dev Channel)

Windows 11 Insider Preview Build 26300.7939 (KB 5077243) has been released to the Dev Channel, introducing new features and improvements. Key updates include enhanced security and performance for batch files through a new secure mode, individual volume sliders for shared audio between Bluetooth LE Audio devices, a new Narrator command to read status bar contents in applications, improved reliability for removing Windows Update files, and enhanced typing reliability with the ADLaM keyboard. The rollout of improved taskbar animations has been temporarily paused. Updates are gradually being rolled out to Insiders who have opted in through Settings > Windows Update.

Tech Optimizer

February 27, 2026

Fake Avast Website Steals Users’ Credit Card Information

A phishing scam is targeting French-speaking users in Europe by impersonating Avast antivirus software. Victims are lured to a fraudulent website that mimics Avast's official portal, where they are tricked into providing credit card details due to a fabricated €499.99 charge and promises of a refund. The scam uses realistic branding, dynamic JavaScript for urgency, and live chat features to collect personal information. Users are asked to select refund reasons and submit their personal details, after which they are prompted for credit card information. The scam employs the Luhn algorithm to validate card numbers and displays a fake confirmation message after data submission. Key red flags include dynamic dates, tight deadlines, requests for full card re-entry, and suspicious live chat interactions. Avast has warned users about these scams and encourages reporting to authorities.

Tech Optimizer

February 27, 2026

Replicate spatial data using AWS DMS and Amazon RDS for PostgreSQL

The process of migrating spatial data from self-managed PostgreSQL, Amazon RDS for PostgreSQL, or Amazon Aurora PostgreSQL-Compatible Edition to Amazon RDS for PostgreSQL or Amazon Aurora PostgreSQL-Compatible Edition using AWS Database Migration Service (AWS DMS) is outlined. Spatial data includes points, lines, polygons, and collections of these features, which are essential for applications like mapping and asset tracking. AWS DMS treats spatial columns as large objects (LOBs) and requires proper configuration for LOB handling and PostGIS support to avoid migration failures. PostGIS is an extension for PostgreSQL that manages geospatial data types and functions, enabling operations such as radius searches and distance calculations. Amazon RDS for PostgreSQL fully integrates with PostGIS, making it suitable for geospatial applications. The migration solution involves ensuring compatibility of PostGIS versions between source and target databases, configuring AWS DMS, and validating the migration. Prerequisites include having an AWS account, RDS instances for source and target, a DMS replication instance, and the PostGIS extension installed on both databases. Tables must have primary or unique key constraints, and geometry columns must be nullable for LOB handling. Best practices for configuring PostGIS include validating version compatibility, monitoring resource usage, and establishing backup strategies. Implementation steps involve creating a spatial table in the source database, preparing the target database, configuring the AWS DMS task with specific settings, and monitoring the migration process through CloudWatch logs. Common errors during replication may relate to LOB handling or PostGIS data types. Post-migration validation includes comparing row counts, verifying geometry data types, and ensuring the functionality of PostGIS spatial functions. Finally, it is recommended to clean up all resources post-migration to avoid ongoing charges.

Tech Optimizer

February 25, 2026

Fix “kernel security check failure”: Step-by-step guide

The "kernel security check failure" error on Windows indicates corruption in critical system memory or internal data structures, triggering a bug check to prevent further damage. It is marked by the Blue Screen of Death (BSOD) displaying the message “KERNELSECURITYCHECK_FAILURE” and stop code 0x139. Causes include outdated or incompatible drivers, corrupted system files, faulty RAM, disk errors, third-party software conflicts, faulty Windows updates, overclocking, and malware threats. Common fixes involve updating Windows and drivers, scanning for corrupted files, using Check Disk (CHKDSK), running Windows Memory Diagnostic, and performing System Restore. If unresolved, a clean installation of Windows may be necessary. Regular updates and avoiding unnecessary software installations can help prevent future occurrences.

Winsage

February 24, 2026

How to migrate applications to Windows 11

Organizations are transitioning from Windows 10 to Windows 11 following the end-of-support date for Windows 10. Windows 11 is designed to support most applications that ran on Windows 10, but challenges may arise due to undocumented legacy applications and configurations. A thorough evaluation of devices, including installed applications and data locations, is essential to minimize disruptions during the upgrade. Migrations can be categorized as clean installations or in-place upgrades. A clean installation erases the previous OS and data, while an in-place upgrade retains existing settings and applications. In-place upgrades are not allowed for certain transitions, such as from Windows 10 Home to Windows 11 Pro without first upgrading to Windows 10 Pro. IT professionals often prefer clean installations to avoid carrying over issues from the previous OS. During an in-place upgrade, data in library folders is retained, but data in the Windows folder may be at risk. Compatibility issues may arise with poorly designed applications or drivers post-upgrade, particularly with legacy applications reliant on outdated frameworks. Preparation for migration includes creating an inventory of applications, identifying potential incompatibilities, and ensuring backups of data. IT must also confirm hardware meets Windows 11 requirements. If a clean installation is chosen, strategies for application installation must be developed, utilizing tools like System Center Configuration Manager or Microsoft Intune. Validation and testing of migration tools should occur in a lab environment, followed by a pilot deployment on a small percentage of machines. After successful pilot testing, the final deployment can proceed, followed by an audit to address any issues. Careful planning and testing are crucial for a smooth migration process.

Tech Optimizer

February 16, 2026

How to Uninstall McAfee on Windows 11 (3 Methods Including winget)

To uninstall McAfee on Windows 11, go to Settings → Apps → Installed apps, find McAfee, and select Uninstall. Alternatively, use the command winget uninstall --id "McAfee.TotalProtection" in an elevated terminal. After uninstalling, run McAfee’s MCPR removal tool to remove any leftover files and registry entries. Windows Security (Defender) will automatically activate after McAfee is removed. McAfee is often preinstalled on Windows 11 laptops by manufacturers like Dell, HP, Lenovo, and ASUS. It is recommended to create a system restore point before uninstalling and ensure you have administrative rights. After uninstalling, check for any remaining McAfee entries in installed apps, running services, Task Manager processes, leftover folders, and scheduled tasks. If issues arise during uninstallation, booting into Safe Mode or using the MCPR tool can help. Windows Security is a built-in antivirus that activates automatically after McAfee removal, providing protection.

Tech Optimizer

February 14, 2026

Creating a Data Pipeline to Monitor Local Crime Trends

The dataset utilized consists of police log entries from the Cambridge Police Department (CPD), which includes the date and time of incidents, type of incident, location, and a detailed description. The project follows a structured ETL process that involves extracting data via the Socrata Open Data API, validating the data for integrity, transforming it for optimal storage, and loading it into a PostgreSQL database. The extraction is performed using a Python client for the API, and validation checks ensure the presence of expected columns and the integrity of the data. The transformation process includes removing duplicates and splitting the datetime column into separate components. The data is then loaded into PostgreSQL, where a table is created to store the incidents. The entire ETL process is automated using Prefect, allowing for daily execution. Finally, the data is visualized using Metabase, which connects to the PostgreSQL database to create dashboards that display crime trends over time.

Winsage

February 13, 2026

Microsoft Refreshes Secure Boot Root of Trust Certificates

Microsoft is refreshing Secure Boot certificates across its Windows ecosystem ahead of their expiration in June 2026 to enhance firmware-level security. Most systems will automatically receive the new certificates via Windows Update, while older or specialized devices may require firmware updates from the original equipment manufacturer (OEM). Devices that do not receive the update will still boot but will gradually lose access to critical boot-level mitigations and future compatibility improvements. The deployment of the new certificates has started with regular monthly Windows updates and applies to home users, businesses, and educational institutions. Organizations can manage updates independently using tools like Group Policy. Many devices produced since 2024 and nearly all systems shipped in 2025 already have the updated certificates. If systems are not updated, they will continue to function but will enter a degraded security state, unable to adopt new Secure Boot mitigations. This could increase exposure to threats and lead to compatibility issues with newer operating systems and software. IT administrators should ensure that Windows Update is deploying the latest updates and that device firmware is current, especially for older hardware or specialized systems.