Windows & BSOD · medium

How to fix Windows activation error0xC004F074

Windows & BSOD troubleshooting guide

What this error means

Windows could not contact the activation server or the key is invalid. Typical causes include hardware change and offline PC.

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Run the activation wizard
  1. Run the activation wizard
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Contact Microsoft
  1. Contact Microsoft
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Use slmgr
  1. Use slmgr
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Hardware change
  • Offline PC
  • Invalid key