Hello
Thank you for your question and reaching out. I can understand you are having issues related to connecting to VPN.
There can several reasons for Login failed.
- Please verify your password in not expired and your account is not locked.
- On your VPN device or software please check your AD User and Computer account is allowed to sign-in.
- Please verify Date and Time should be synced.
- Please ensure your AD Domain Replication health is good and all in Synced.
- Please try to Disjoined and Re-Join your computer to your AD domain.
- Disable any Antivirus program or Windows firewall you may have for temporary purpose.
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