Glow 26.14 – Free System Diagnostic & Analysis Software

What’s New in Glow 26.14:

New Features

• Operating System Support: Full support has been provided for Windows 11 version 26H2.
• System Theme Update: The system accent color is now applied to buttons, icons, selection elements, and menu highlights. The lighter shade is used in dark mode, while the original shade is used in light mode. All colors are sourced from the actual Windows system palette.
• Port Scanning Tool (CTRL + Shift + P): Glow now includes a next-generation network security tool that analyzes TCP/UDP ports and network listeners to help identify exposed services, unnecessary open ports, and potential security risks on your system. You can view which program is using each port along with its PID, protocol, address, connection status, exposure, and risk level, with support for automatic refresh, change tracking, fast TCP scanning of up to 5,000 ports, and exporting results. External network scans include subnet and public network warnings with an approval mechanism. This tool is designed solely to help you assess the security and network visibility of systems you own or are explicitly authorized to analyze.
• Startup and Shutdown Process Improvements: Reworked thread management and background task coordination. Improved resource management and shutdown stability to ensure a more reliable application lifecycle. Added a “Shutting down…” notification during shutdown.
• Windows License Keys: OEM (OA3) keys embedded in the UEFI BIOS are now read with priority, and the genuine license key is displayed on OEM laptops. Both 32-bit and 64-bit registry views are also scanned. Format validation is performed to prevent invalid keys from being displayed, and GVLK ordering has been corrected. The N-letter rule on Windows 8.1 and above is now applied only when necessary. In the Windows 10 ESU check, the consumer signal and the ESU license are now evaluated together.
• JSON Export: JSON support has been added to reports as the 4th export format, below the Markdown option. JSON output is generated in a structured format that preserves the section, group, and row hierarchy and can be easily processed programmatically.
• Revamped DNS Test Tool: DNS servers are now tested with real DNS queries; each server is tried 4 times and the best response time is shown, with IPv4/IPv6 results listed in separate columns. Tests can be cancelled at any time, including during the pre-check phase. Closing the window during a test requires confirmation, and the main application does not close until the test completes. The CleanBrowsing DNS service has also been added to the DNS list.
• DISM and SFC Automation Tool Update: Optimized execution time by skipping unnecessary repair operations when no corruption is detected by CheckHealth and ScanHealth; added detection of irreparable images to terminate the process with an error, and introduced an additional system log verification mechanism to improve the accuracy of inconclusive SFC results.
• Faster Internet Check: 3 different addresses are now checked simultaneously, and the first response is sufficient. This reduces the waiting time with no internet connection from approximately 9 seconds to 3 seconds.
• Expanded Stealth Mode Coverage: System and network information such as Windows User Name, Computer Name, Local IP Address, Gateway, and DHCP Server are now hidden in Stealth Mode.
• Improved Stealth Mode Export and Reporting: Neutral, language-independent file names are now used for exported files. For raw reports that cannot be masked, such as battery reports and minidumps, a warning and confirmation prompt is shown before exporting.
• HTML Report Engine Update: The interface of exported HTML reports has been modernized. The card design has been made responsive to all screen sizes, with soft shadows and up-to-date design details. Print view support has been added; keyboard focus and reduced-motion preferences are supported.
• DPI and Multi-Monitor Support: Handling of different DPI scaling levels and transitions between monitors has been improved. Windows are now displayed with the correct size and position based on the scale of the monitor they open on; tabs, panels, and tables also scale more consistently across different display scales.
• Dynamic Status Information for Installed Drivers and Installed Services: Status information for drivers and services in the Installed Drivers and Installed Services sections is now automatically updated every 5 seconds. This allows you to instantly track whether a driver or service is running or stopped.
• Real-Time CPU Speed: This new feature in the Processor section displays the real-time speed of the selected processor, including Turbo frequencies.
• Adapter-Specific DNS Information: DNS addresses are now matched with their corresponding network adapter. When the adapter is changed, the associated DNS information is also updated. Duplicate DNS servers are automatically deduplicated.
• System ID Analysis Tool Update: If an active TPM module is present in the system, the TPM manufacturer ID is now included in the analysis process. This allows hardware changes to be detected much more precisely and reliably.
• Network Troubleshooting Tool: The launch screen has been redesigned. Instead of displaying an empty list before the process starts, the actions to be performed are now presented as a preview under the “Commands to Be Executed” heading.
• Office Product Names and Channel Information Improved: Microsoft 365 (Apps/Family/Business) and Office 2010–2026 editions (Pro Plus/Standard/Home) have been updated, and Visio and Project are now displayed as separate products. Subscription channel information has been added, along with an additional registry backup to ensure accurate product name detection.
• High DPI and Windows Compatibility: Installed application icons are now displayed more accurately on high-DPI screens. Necessary improvements have been made for long file paths, UTF-8 character support, and Windows modern memory management features.
• RAM Manufacturer Detection: Different BIOS spellings (reversed codes, combined codes, etc.) are now converted to brand information more accurately. The RAM manufacturer list has been rewritten from scratch based on the official JEDEC manufacturer list.
• RAM Type Detection: DDR, LPDDR, and HBM3 memory types are now supported.
• MRDIMM Memory Support: Support has been added for MRDIMM, the next-generation server memory type.
• RAM Frequency and Voltage Information: RAM frequency and voltage are now calculated more accurately by using alternative values when information is missing.
• RAM Slot Detection: BANKs with the same name in particular are now parsed more accurately using DeviceLocator information.
• Chipset Detection: The actual chipset is now detected more accurately via PCI. This allows the Chipset information in the Motherboard section to be displayed more accurately and cleanly.
• CPU / Socket Designation Enhancement: The socket display for soldered (BGA) processors has been enhanced. For processors verified as soldered by analyzing UpgradeMethod data, soldering status information is now included alongside the motherboard location code (e.g., U3E1 (Soldered)).
• Supported Processor Features: Glow can now display advanced features offered by modern processors within the limits of C# and .NET Framework 4.8.1.
• Monitor Bit Depth: The actual panel value of each monitor is read via EDID and displayed as 32 Bit (8 bpc) or 32 Bit (10 bpc).
• Bluetooth Information Tool: Adapter scanning has been optimized, delivering results approximately 2× faster.
• New Brands in the Bluetooth Information Tool: Lite-On, ASUS, TP-Link, and Belkin adapters are now shown by name.
• TS Custom Controls Module Innovations: The TS Custom Controls module has been upgraded to v2.1. Keyboard support has been added to the scrollbar; it can now be controlled with the arrow keys, PageUp/PageDown, and Home/End keys. Keyboard focus indicators have been added for the checkbox, radio button, and scrollbar. The interface now refreshes automatically when a window is moved to a monitor with a different scaling ratio.

Fixed Bugs

• Windows License Key: Crashes that could occur with short or empty DigitalProductId records have been fixed. When no valid key is found, the “No product key” message is displayed, and the license validation process has been reworked with a more reliable algorithm.
• Window and Interface Issues: Fixed the accumulation of invisible windows caused by reopening tools, as well as crashes on the About screen triggered by missing or corrupted language files.
• Motherboard Information: Fixed the error that caused motherboard information to disappear completely on systems without TPM.
• License and Status Display Improved: Fixed issues where unlicensed products were incorrectly displayed as licensed, the VOLUME_KMS/MAK channel was shown as “Other,” and raw notification text appeared on screen. Additionally, obsolete Grace entries that were unnecessarily listed in healthy Microsoft 365 installations are now hidden, making the product list clearer and easier to understand.
• Various Stealth Mode and Data Concealment Issues Fixed: Fixed issues where network information that should be hidden could be copied, inconsistencies between concealment and copy blocking, and the incorrect hand cursor on the battery serial number.
• Network / Connection Speed Fix: When Wi-Fi chip or adapter drivers did not return speed information, the raw system sentinel value (9223372036854775807) was processed as the actual speed and incorrectly displayed as “9223372036.85 Gbps”. Such invalid data is now filtered out and displayed as “Not Connected”.
• Improved Internet Connection Check: Fixed an issue where captive portals in places such as hotels and shopping malls were incorrectly detected as active internet access even though there was no real internet connectivity.
• Processor Information: The incorrect 64-bit conversion in processor information has been fixed. Missing or incorrect name, socket, core, and speed information is now displayed as “Unknown”, preventing list and selector misalignment on multi-processor systems.
• IP Address and Adapter Lists: Fixed list misalignments on adapters with multiple or missing IP addresses. Missing information is displayed as “Unknown”, and alignment is preserved by using placeholders.
• Disk Information: “Unknown” is now displayed for missing format, interface, or health information, preventing misalignment in lists and selectors.
• Battery Information: Battery chemistry detection has been improved, with fallback information retrieved via Win32 when necessary. Battery status flag handling has been corrected; Unknown, High, and Charging states are now displayed correctly. Incorrect zero values in battery capacity and remaining-time calculations are cleaned up, and invalid values are displayed as “Unknown”.
• BitLocker Information: Processing no longer stops on disks where BitLocker information cannot be retrieved; information for other disks continues to be displayed.
• Device and Hardware IDs: Processing of device and hardware IDs has been made safer. Missing GUID and status information is displayed correctly. The raw value is preserved when the driver date cannot be retrieved; device name and selector operations have also been made consistent.
• Control D DNS IPv6 Addresses: Fixed incorrect matching of IPv6 addresses belonging to a different filtering profile than IPv4, ensuring the correct addresses are now written.
• Fixed Export and Log Recording Issues: Fixed incorrect file name generation in Stealth Mode, and the computer name has been completely removed from log files.
• Bluetooth, Wi-Fi, and Testing Tools: Moved Bluetooth scanning to the background and added a 60-second timeout. Fixed Wi-Fi listing and password retrieval issues on Windows systems using different languages. Prevented unnecessary idle polling in disk tests and improved CPU test duration tracking and score calculations.
• Tab and Page Layout: Fixed issues where the tab area shrank on DPI changes, hidden tabs were lost, and table measurements on not-yet-opened pages were not updated.
• Panel and System Information: Fixed uneven panel margins, the battery panel shrinking at certain DPI scales, and misplaced battery, RAM, and disk information. The unnecessary decimal display in RAM usage percentage has also been removed.
• Audio Drivers and Selectors: USB/HDMI audio driver matching has been fixed. Safe fallback is used for driver date and device ID information, status information is processed more reliably, and selection is preserved after exporting.
• Cache Cleanup Tool – Icon Cache Cleaning: Resolved issues preventing the deletion of locked and read-only icon files. All leftovers are now thoroughly cleaned, and icons are automatically refreshed, fixing broken icon problems.
• TS Custom Controls Module Bug Fixes: Fixed display and interaction issues in custom UI components. Corrected accidental scrollbar repositioning on right-click, cramped dropdown rows on high-resolution displays, and performance issues in crowded lists. In addition, the missing P/Invoke call error that caused the ComboBox scrollbar color to be inconsistent with the theme has been fixed.
• Bluetooth Brand Tags: Incorrect matches, such as a fingerprint reader appearing as Samsung and NVIDIA appearing as Qualcomm, have been cleaned up. The Ralink code has been corrected.
• Top Menu Icon Blur Fix: Fixed a bug that caused icons in the top menu to appear blurry on some systems.
• Translation Errors: Approximately 312 corrections have been made across 16 languages. Sentences causing reverse meaning, broken characters, typos, and missing accents have been fixed. Translation errors that changed meaning, especially the Spanish deletion warning and the Portuguese disk warning, have been corrected.
• Stuck Pixel Repair Tool Title: It displayed “N/A Langs” in all languages; this has been fixed.

Changes

• Disk Usage: Used space is now calculated on a partition basis. Unpartitioned space and recovery partitions are no longer counted as used space.
• Disk Mapping: Disks are now matched primarily by serial number. Model and legacy ID information is used as a fallback matching method.
• Improved DNS Test Results and Reports: The status of tested and cancelled servers is now shown clearly. Connections without IPv6 support are indicated, report alignments have been fixed, and the “Ping Time” label has been updated to “DNS Time”. Servers that do not respond to DNS queries are now correctly shown as failed.
• IPv6 Display: Global/ULA addresses are displayed with priority; if unavailable, the link-local address is shown, and if that is also unavailable, “Unknown” is displayed.
• DNS Deduplication: Duplicate DNS servers are now automatically deduplicated.
• Virtualization Status: Virtualization status is now determined more accurately based on firmware or active hypervisor information.
• Operating System Time Zone Update: Alongside the selected time zone, the UTC offset information for the relevant region (e.g., UTC+03:00) is now clearly displayed.
• Updated Concealment Behavior for USB Identity Information: Since USB Controller Hardware ID, USB Controller PNP Hardware ID, USB Device ID, and USB Device Hardware ID do not contain private data, they are no longer hidden in Stealth Mode.
• Windows 8.1+ License Rule: The N-letter rule is now applied only when necessary.
• Windows 10 ESU Check: The consumer signal and the ESU license are now evaluated together.
• Monitor Area: Monitor and work area coordinate/resolution information has been reformatted to 1920 x 1080 (X: 0, Y: 0) for consistency with the panel.
• CPU Family: Family, model, and revision information has been reformatted to Intel X64 (Family: 6, Model: 154, Revision: 3) with parenthetical separation to improve readability.
• Centralized DPI Management: DPI handling has been moved to a single common standard; legacy DPI helpers, manual DPI definitions, and legacy Windows Forms scaling methods have been removed. Hard-coded DPI values in the code have been cleaned up to centralize scaling.
• Memory and Resource Management: Ensured WMI resources are released when operations complete. Limited the image cache and fixed duplicate memory usage in wallpaper previews and a counter leak during window resizing.
• Interface and Task Cleanup: Improved memory cleanup for UI components associated with closed windows, tabs, and tables. Ensured that timers and counters belonging to closed tools stop completely.
• Minidump Reading: The minidump folder is now arranged to be read in a single operation.
• System DLL Calls: Calls to core system libraries (dwmapi.dll, kernel32.dll, shell32.dll, user32.dll, uxtheme.dll, iphlpapi.dll) have been optimized for modern Windows versions.
• NVMe Typo: The “NVM-e” typo has been corrected to “NVMe”.
• About Update: The About window now adheres to the native Windows border.
• Code and Project Cleanup: Unnecessary padding settings in tab and page layouts have been corrected, unused settings have been cleaned up, and comments have been made more consistent.