I have a windows 2008 R2 running NPS and Ent CA. I am using Cisco WiFi. Employees are able to use Wifi after they authenticate with the NPS and CA. Tis has been working for about a year now and all of a sudden it stopped.
I have seen errors in the security log
Event 6273
Network Policy Server denied access to a user.
Contact the Network Policy Server administrator for more information.
User:
Security ID: user
Account Name: user
Account Domain: domain
Fully Qualified Account Name: user
Client Machine:
Security ID: NULL SID
Account Name: -
Fully Qualified Account Name: -
OS-Version: -
Called Station Identifier: mac
Calling Station Identifier:mac
NAS:
NAS IPv4 Address: ip address
NAS IPv6 Address: -
NAS Identifier: Wifi name
NAS Port-Type: Wireless - IEEE 802.11
NAS Port: 62193
RADIUS Client:
Client Friendly Name: Wifi name
Client IP Address: Wifi ip
Authentication Details:
Connection Request Policy Name: Secure Wireless Connections
Network Policy Name: Secure Wireless
Authentication Provider: Windows
Authentication Server: Servername
Authentication Type: PEAP
EAP Type: -
Account Session Identifier: -
Logging Results: Accounting information was written to the local log file.
Reason Code: 23
Reason: An error occurred during the Network Policy Server use of the Extensible Authentication Protocol (EAP). Check EAP log files for EAP errors.
and
The other error is
the supplied message is incomplete. the signature was not verified. certificate
I also get event id 5061
Cryptographic operation.
Subject:
Security ID: SYSTEM
Account Name: servername$
Account Domain: Domain
Logon ID: 0x3e7
Cryptographic Parameters:
Provider Name: Microsoft Software Key Storage Provider
Algorithm Name: RSA
Key Name: cert name
Key Type: Machine key.
Cryptographic Operation:
Operation: Decrypt.
Return Code: 0x80090010
Any help would be appreciated...
Thanks