Laptop Network Unlock certificate expired
4.5
Network Unlock stops working because the security certificate has passed its end date.
Symptoms
- Sudden failure
- Certificate error in logs
- Manual unlock required
Possible Causes
- Certificate expiration
- Auto-renewal failure
Step-by-Step Fix
1
Renew Certificate
Issue a new certificate on the CA/WDS server.
2
Update GPO
Deploy the new certificate to all clients.
3
Clear Old Certs
Remove the expired certificate from the client store.
When to See a Technician
Certificates usually last 1-2 years; set a reminder to renew them before they expire.
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