KB10392003

Description: RDP Connection Error of “The requested security package does not exist”

Common customer description: I can’t log into the server via RDP.

Probing questions:

Do you receive any error messages?
Were you able to before?
When did this stop working?

Steps to isolate: Verify the error message above.

Steps to resolve:

1. Go to Start, run “regedit”
2. Go to HKEY_LOCAL_MACHINEsystemcurrentcontrolsetcontrolLSA
3. Open (double-click) the Security Packages key
4. Make sure the following values are inside (order matters)
kerberos
msv1_0
schannel
wdigest
tspkg
pku2u
5. Reboot the computer

Additional considerations: The last two values are generally missing, “tspkg and pku2u”