Articles about c | UserComp.com

Program won't connect through OpenVPN

Resolve macOS OpenVPN connection failures caused by DNS leaks, incorrect routing, or firewall blocks.

Expected Speed Up: M3 Pro Mac vs. Intel-based Machine

Resolve slow video encoding on M3 Pro Macs by switching FFmpeg from software codecs to hardware-accelerated h264_videotoolbox and hevc_videotoolbox.

Local IS Website Certificate Issues: Troubleshooting a Generated Certificate

Resolve local IS website HTTPS validation errors caused by mismatched private keys, incorrect domain bindings, or missing intermediate CA certificates.

Clean HTML API Response: A Guide for Tech Support

Resolve rendering issues in HTML API responses by removing invisible control characters and empty lines using Notepad++.

Understanding Edge browser cookie management for tech support

Resolve Microsoft Edge authentication loops and Azure Portal access issues by clearing specific cookies and configuring site permissions.

Convert Win10 LTSC custom image to iso or wim

Convert a custom Windows 10 LTSC image to a portable WIM or bootable ISO file using Windows ADK tools for deployment.

Can't Fix Scheduled Telegram Bot Timezone Issue

Fix Telegram bot scheduling errors caused by server timezone drift by enforcing UTC storage and explicit client-side conversion.

Automatically Highlighting Lowest and Highest Numbers in Filtering Columns

Resolve misleading conditional formatting in filtered Excel columns by highlighting only visible highest and lowest values using AGGREGATE formulas.

Decline all URIs with tilde character in Nginx

Block URIs containing a tilde character in Nginx to prevent security risks and reduce backend load.

Building and Running C++ Code in WSL2 (Linux Debian) with Mingw - Not Always the Last One Running

Enables running MinGW C++ executables in WSL2 Debian by configuring interop and preventing path conflicts.

Troubleshooting SSH Connection Issues: How to Resolve Mysterious Blockages

Resolve SSH connection timeouts and blockages by diagnosing network, local firewall, or server configuration issues.

Error Installing Flatpak Package on Kali Linux Rolling: Unable to Locate Package

Resolve the Unable to Locate Package error when installing Flatpak on Kali Linux by updating repositories and verifying sources list configuration.

Connecting to a RealVNC Server via Intermediate SSH Terminal

Resolve VNC connectivity issues by routing traffic through an SSH tunnel to bypass network restrictions and encrypt plaintext data.

Using VS Find & Replace with Regular Expressions Across Lines: A Tech Support Guide

Resolve multi-line text replacement issues in Visual Studio by enabling regular expressions and using \r\n for newline matching.

Changing Cell Alignment and Font Color in Spreadsheets

Resolve poor data readability by adjusting cell alignment and font color in Excel, Google Sheets, and LibreOffice Calc.

Find Missing Rows in Two Datasets Based on Multiple Criteria: A Tech Support Solution

Use Power Query Left Anti join to identify rows in the primary dataset missing from the secondary dataset based on multiple key columns.

Geany 1.36: PHP Highlight Dollar Sign on Double-Click

Configure Geany 1.36 to select PHP variables including the dollar sign on double-click by modifying the wordchars property in the php.lang language definition file.

Setting Large User Account Attributes in Windows 10: Creating and Parsing Local Group Membership

Resolve bulk local group membership updates in Windows 10 by parsing CSV data and validating against current members to prevent duplicates.

How to Solve The Following Signatures Couldn't be Verified Because the Public Key is Not Available: NO_PUBKEY EB3E94ADBE1229CF

Resolve the NO_PUBKEY EB3E94ADBE1229CF error by importing the missing GPG key to /etc/apt/trusted.gpg.d/ for secure package verification.

Putty: Reading Script Filenames - Yes or No?

Clarifies that PuTTY does not prompt for script filenames, identifying the issue as remote shell or script behavior.

Excel: Find and Filter Long Sublists with Blank Cells

Resolve issues with filtering long sublists containing blank cells in Excel using AutoFilter or dynamic formulas.

Determining If Enough Space is Available in Destination Drive for rsync Dry Run

Calculate total bytes required for an rsync transfer using a dry run to prevent destination disk exhaustion failures.

Effortlessly Populate Column Filter Values in Another Column in Excel

Extract visible filtered values into a new column without blank rows or hidden data gaps.

Using GNU Stow to Manage Complex Folder Structures: A Tech Support Guide

GNU Stow manages dotfiles by creating symbolic links from a central repository to the home directory, enabling version-controlled and reversible configuration management.

Resolving Missing Metadata in Large Video Files

Fix missing metadata in large video files using FFmpeg to inject tags without re-encoding.

Upgrading Linux Kernel Version without Compiling Everything: Incremental Patches

Apply incremental patches to Linux kernel source to save bandwidth and maintain a stable baseline while avoiding full tarball downloads.

Keyboard Shortcuts to Open Different Profiles in Edge on Windows

Resolve the lack of native keyboard shortcuts for switching Microsoft Edge profiles on Windows by using separate windows and Alt+Tab.

Fixing Old Dart Code Errors in 2020 Dart SDK Update

Resolve compilation errors in legacy Dart projects caused by null safety and deprecated APIs during SDK upgrades.

Disk Became RAW After CHKDSK Operation

Resolve RAW disk status after CHKDSK by halting writes, imaging data, and using recovery tools to restore file system integrity.

Magnetic Card Reader Not Functioning: Computer Starts but Unplugging/Replugging Doesn't Show Device in Device Manager

Resolve magnetic card reader not appearing in Device Manager by fixing USB enumeration failures through hardware checks and driver reinstallation.

Windows 11 Home: COM Port Not Showing for Drone Software

Resolve missing COM port errors in Windows 11 Home for drone software by installing correct drivers and manually assigning a low-numbered COM port via Device Manager.

MacBook: External Monitor Type-C Port Not Charging While In Use

Resolves MacBook not charging via external monitor by identifying incorrect port usage, insufficient power delivery, or incompatible cables.

Regex: Exclude Operators from Word Searches

Exclude punctuation and symbols from word searches in Notepad++ using negative lookarounds to isolate exact tokens.

Sum Range Based on Values in a Database: Excel Formula Equivalent

Sum values in a database range based on a dynamic list of lookup criteria using SUMPRODUCT and MATCH.

Running Outdated JDK 8 with PaperMC

Resolve Java version conflicts to run PaperMC with JDK 8 by configuring explicit startup scripts and environment variables.

Download Only Part of a Large File: A Tech Support Guide

Demonstrates how to download specific byte ranges of large files using curl, wget, or browser developer tools via HTTP range requests.

Chocolatey gcc environment variable disappeared from chocolatey/bin

Resolve GCC environment variable issues in WSL by installing build-essential via apt instead of using Windows Chocolatey.

Mac and Old Adobe Flash: Understanding HSTS Behavior in Settings.plist

Uninstall Adobe Flash and use HTML5 alternatives because it is end-of-life, unsupported, and incompatible with modern browser security standards.

Identifying and Managing Growing Storage Usage on a Tech Support Site

Resolve fluctuating server storage usage by identifying large files and automating cleanup of logs and temporary data.

Windows 10 Search Feature Going Nuts? Here's How to Calm It Down

Resolve Windows 10 search failures, missing results, and high CPU usage by resetting the corrupted Search index database.

Is there a exception to python numeric type's in-place operation?

Explains why Python numeric types do not support true in-place operations due to immutability, requiring new object creation instead.

No Sound Cards Found: Fresh Install Arch Linux on ThinkPad L14

Resolve missing sound cards on Arch Linux ThinkPad L14 by installing firmware, loading kernel modules, and configuring the audio daemon.

Referencing and Evaluating Another Cell's Array Formula: Create a Master Array using VSTACK in Excel without VBA/Macros

Combine multiple dynamic array formula outputs into a single vertical master list using VSTACK without VBA.

Unable to Capture Packets with Airodump-ng on Beaglebone

Resolve airodump-ng packet capture failures on Beaglebone by verifying hardware compatibility, installing drivers, and correctly enabling monitor mode.

Using M.2 Drives on a PCIe X16 Adapter Card

Resolves issues with installing and configuring M.2 NVMe drives on older motherboards using PCIe X16 adapter cards.

Best Compression for GIMP Image: Still Images, Music Videos?

Resolve confusion by using JPEG or PNG for still images in GIMP, while recognizing that video compression requires external tools since GIMP cannot encode playable videos.

Seagate Hard Drive Keeps Disconnecting: Solution for Seagate Exos X2220TB and Sabrent USB 3.0 SATA Dock

Resolve Seagate Exos X2220TB disconnects in Sabrent USB 3.0 dock by fixing power delivery and disabling USB selective suspend.

Optimizing Minimized App Performance: Tips and Tricks

Resolve system slowdowns caused by resource-heavy minimized applications by adjusting background limits and power settings.

Generating OpenVPN TLS-Crypt Key with OpenSSL

Generate a 256-bit ta.key file to encrypt OpenVPN TLS handshakes and hide VPN usage from network observers.

How to Change Excel Character Set?

Resolve garbled special characters in Excel CSV files by specifying UTF-8 encoding during import or saving.

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