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.
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:\> _
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What’s going wrong?
Fresh off the bench
Latest fixes
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Windows Update service missing: how to restore it in Windows 11 and 10
Windows Update service missing from services.msc? Check with sc query, scan for malware, run SFC and DISM, use System Restore or a…
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Operating system loader failed signature verification: how to fix it
Operating System Loader failed signature verification is a Secure Boot error. Remove USB drives, restore the default Secure Boot keys, rebuild the…
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Windows cannot access a shared folder: how to fix it
Windows cannot access \\PC\share? Match the error code (0x80070035, 0x80004005, 0x800704cf, permission or guest access blocked) to the right fix for shared…
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Teams classic: why it’s gone and how to switch to new Teams
Teams classic stopped working on July 1, 2025. Here’s what changed, why you can’t download it, how to install new Teams and…
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This sign-in option is disabled: how to fix it in Windows 11 and 10
Windows says this sign-in option is disabled because of failed sign-in attempts or repeated shutdowns? Restart cleanly, use your password, wait out…
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Rufus Windows 10: how to make a bootable USB step by step
Use Rufus to make a Windows 10 bootable USB: get the ISO, pick GPT or MBR, choose the setup options and boot…
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.