These Files Might Be Harmful to Your Computer? Fix the Zone
Windows shows These files might be harmful when a share opened by IP address lands in the internet zone. Add the server to Local intranet, or unblock downloads.
Can’t Delete a File Named nul? Skip the Name Check
Windows treats nul as a device name, so Delete fails. Use del with the long path prefix and the full path in Command Prompt, or rm nul in Git Bash.
App Shows Twice on the Taskbar? Pin the Running Button
A pinned app that opens a second taskbar button has two IDs. Start it, pin the running button and unpin the old one; Chrome profiles need their own shortcut.
Memory Diagnostic Results Missing? Read the System Log
Windows Memory Diagnostic writes its verdict once, to the System log under MemoryDiagnostics-Results. Event 1201 means no errors, 1202 means hardware errors.
Can’t Type Before a Table in Word? Split It at Row 1
A Word table on the first line leaves no line in front of it. Click in the first row and use Split Table, or press Ctrl+Shift+Enter, to add a blank line.
ERR_UNSAFE_PORT in Chrome? The Port Is on a Block List
Chrome shows ERR_UNSAFE_PORT when your server uses a port on its built-in block list, such as 6000 or 6666. Move the server, or start Chrome with one switch.
Outlook Reminders Hidden Behind Other Windows? Fix It
Outlook reminders opening behind your other windows? Classic Outlook has a Show reminders on top box; new Outlook needs the Reminder style in Calendar notifications.
Excel Replace Asterisk Wiped Your Cells? Use a Tilde
Replacing * in Excel empties every cell because the asterisk is a wildcard. Undo it, then search for ~* to find the real star, ~? for a question mark.
Excel Opens a CSV in One Column? Check the Separator
Excel puts a whole CSV line in column A when the file uses a different separator from your PC. Check it in Notepad, add a sep= line, or import the file.
cd Not Changing Drive in Command Prompt? Add /d
Typed cd D: and Command Prompt stayed on C:? Plain cd only sets the other drive folder. Add /d, type the drive letter alone, or use pushd for a network path.