Outlook shows an unread count on a folder, but every message is read and the Unread filter is empty? The message is usually hidden, not gone. Search for read:no on the server, clear the folder offline items, or start Outlook with /cleanips.
Num Lock off again when you reach the sign-in screen, so your PIN will not type? The sign-in screen has its own setting, and fast startup can bring an old state back. Set it there, change one registry value, or turn off fast startup.
A RunDLL box says there was a problem starting LogiLDA.dll every time you sign in? A leftover Logitech startup entry still asks for a file that is gone. Disable it in Task Manager, find it with Autoruns, or delete it from the Run key.
Excel keeps asking to update links after you used Break Links? It only rewrites formulas and charts. The link usually hides in a named range, a drop-down list, a conditional format rule or a shape.
Pasting a Word table into Excel turns every two-line cell into two rows? No paste option stops it. Swap the line breaks for a marker in Word, paste, then turn the marker back into a line break in Excel.
The Windows Installer folder taking tens or hundreds of gigabytes? Add the Subject column to see which product owns the files, uninstall what you do not use, move orphaned files instead of deleting, and compress the folder.
Apps and dialog boxes keep opening on your other screen? The app decides, not Windows. Close it where you want it, start it from that screen, make that screen the main display, or let FancyZones move it.
Your window keeps losing focus while you type, or games drop to the taskbar on every click? Windows only lets a few programs take the front. Log which one does it, then disable that helper or reinstall Windows in place.
Outlook folders stop at a year ago while the web still has your old mail? Classic Outlook keeps only part of the mailbox offline. Set Download email for the past to All, or check the new Outlook offline days.
Mapped drive asks for the password again after every restart? Windows reconnects with an old or mismatched entry in Credential Manager. Clear it, save one under the short server name, and map from a normal prompt.