**1
For enterprise networks or modern VPNs (IKEv2), error 233 appears if the client does not trust the server’s root certificate, if the certificate is expired, or if the does not match the server address. error while validating security key error code 233
Remove, wait 10 seconds, reinsert the smart card / USB security key. **1 For enterprise networks or modern VPNs (IKEv2),
(BitLocker only – not recommended long-term): if the certificate is expired
If error persists: