Windows · Office · Apps troubleshooting

When your PC acts up, start here.

Type the error code or describe what went wrong. Every guide starts with the safest fix first and tells you exactly when to move on to the next step.

ADMINISTRATOR: COMMAND PROMPT

C:\> sfc /scannow

Verification 100% complete.

! found corrupt files, repaired some

C:\> DISM /Online /Cleanup-Image /RestoreHealth

[==========100.0%==========]

✓ The restore operation completed successfully.

C:\> _

Browse by problem

What’s going wrong?

01

Windows Errors

Stop codes, 0x error codes and messages that won’t go away.

02

Startup & Display

Black screens, boot loops and PCs that won’t start.

03

Windows Update

Updates that fail, hang, or break something after installing.

04

Office & Outlook

Outlook, Word, Excel and Microsoft 365 problems.

05

Security & Privacy

Malware cleanup, locked accounts and keeping your PC safe.

06

Network & Sharing

Wi-Fi, network paths, shared folders and printers.

07

Hardware & Drivers

Devices that stop working and drivers that won’t install.

08

System Tools

SFC, DISM, Registry, Task Manager and other built-in tools.

09

Apps & Software

Browsers, updaters and everyday programs misbehaving.

10

Windows How-To

Settings, shortcuts and tasks explained step by step.

Fresh off the bench

Latest fixes

How every guide is built

01 / THE EXACT PROBLEM

We start from the error message or symptom you actually see, and explain what causes it in plain words.

02 / SAFEST FIX FIRST

Quick, low-risk steps come first. Anything that changes system settings comes later, with a warning.

03 / WHERE IT APPLIES

Each guide says which Windows or app versions it covers, so you don’t follow steps meant for a different system.

04 / KEPT CURRENT

When Windows or Office changes, guides are reviewed and the update date is shown at the top.