Monday, May 6, 2024

Azure MFA NPS extension stopped working due to expired certification

 Users complained they were unable to log in VMware Horizon Client portal and the logon stuck at "Authenticating...." screen.

So I started troubleshooting the MFA by looking into the NPS event logs and found the log of 6274 with the error message, "The request was discarded by a third-party extension DLL file." 

In AuthZ ? AuthZAdminCh event log category, the Errorcode of "CLIENT_CERT_INSTALL_ERROR" indicated the certificate issue so I suspected the certificate has expired.

Indeed the certificate has expired yesterday....

So I reran the .\AzureMfaNpsExtnConfigSetup.ps1 script in C:\Program Files\Microsoft\AzureMfa\Config on NPS server. It generated a new certificate with another 2 years of period.

Once the certificate is in place, the 2FA login is happy now.

Tuesday, April 2, 2024

Solution: The size of the extent is less than the minimum in VMware

 I ran out the C drive space in a Windows 10 virtual machine in VMware. However, after adding additional free disk space, the "Extend" option is grayed out in the Disk Management console. Then I tried to use diskpart command and received the error of "The size of the extent is less than the minimum."