troubleshooting– Category –
This article provides solutions to problems such as Windows Update failures, internet connectivity issues, and app startup issues. It also explains specific recovery methods based on real-world experience, including solutions for frequently occurring error codes and system repair procedures using the command prompt.
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Detailed explanation of each item on the browser's browsing history data deletion screen.
When your computer is running slowly or websites aren't displaying correctly, you might want to clear your browser's cache. However, with browsers like Google Chrome and Microsoft Edge... -
[Windows 11] Bug and cause of the menu becoming transparent when right-clicking on a desktop image
A bug has been discovered in Windows 11 environments where right-clicking an image file on the desktop causes the context menu to become transparent and not render correctly. This issue... -
Error "0x80073712" occurs with Windows 11 preview update "KB5079391".
A known issue causing installation errors has been added to the Windows 11 preview update "KB5079391," released on March 26, 2026. Currently, ... -
[Win11] How to fix the infinite loop update crash with error 0x800f0806! Force cancel pending operations
Every time I shut down or restart Windows 11, an update installation starts, but it always crashes and goes back to the original state... Furthermore, I can't use the DISM command to install components... -
[Independent Verification] Will the Secure Boot issue brick your graphics card in 2026? We asked official Microsoft support directly.
Recently, in the PC build and gamer community, there has been talk that "the old Secure Boot certificate (Microsoft Corporation UEFI CA 2011) will expire in June 2026, and that PCs may be affected by graphics cards..." -
What to do if Microsoft Edge won't open or crashes
Have you ever encountered problems like "Microsoft Edge crashes suddenly," "It won't open when I click," or "Certain pages won't load"? Even if your everyday browser doesn't work... -
[Win11] Bluetooth disappears after Windows Update and how to fix it
After applying Windows Update in Windows 11, it has been confirmed that Bluetooth suddenly stops working or the Bluetooth item disappears from the settings screen. -
Windows 11 won't boot? "Secure Boot 2023 Signature" issue and how to create a repair tool
The Windows 11 preview update KB5074105, released on January 29, 2026, and the next official update will complete the preparation phase and include Secure Boot... -
[Solved] What to do when you set "Maximum Memory" in msconfig and it won't start or you get a blue screen [BAD_SYSTEM_CONFIG_INFO]
Following information posted online, I checked "Maximum Memory" under "Advanced Boot Options" in System Configuration (msconfig), and after rebooting, Windows 11... -
[Temporary Workaround] How to fix the "flash bang" issue in Windows 11 Dark Mode (white flashing when creating a new tab)
Windows 11 dark mode enthusiasts have been plagued by a "flash bang" issue in which Explorer flashes briefly. Microsoft has fixed this issue in the December 2025 cumulative update... -
[Important] Windows "Telephone Authentication" Procedure Changes. Discontinuation of Automated Voice Messages and Migration to Web Authentication
On December 12, 2025, the Windows Support team at Microsoft Japan announced a change to the "telephone activation" procedure for Windows license activation. The previous "telephone activation" procedure... -
How to fix the issue where "QTTabBar" disappears after applying Windows Update
In Windows 11, after applying a Windows Update from December 1, 2025 (such as KB5070311, KB5074109, or KB5074105), the Explorer tab extension software "QTTabBar" may not work properly.