Personal Microsoft accounts registered with corporate email address can cause end-user confusion and probably some headaches for IT admins. Let’s find these users before they find you.
Find personal Microsoft accounts with corporate email address
Posted by Daniel Kovacs on December 16, 2025
https://f12.hu/2025/12/16/find-personal-microsoft-accounts-with-corporate-email-address/
Disabling Entra Seamless SSO – some extra notes
Disabling Entra Seamless SSO is simple – or you can get lost in the details.
Posted by Daniel Kovacs on October 31, 2025
https://f12.hu/2025/10/31/disabling-entra-seamless-sso-some-extra-notes/
Quicknote: Hybrid Exchange mailbox migration account vs. modern authentication policy
Recently, I came across an uncommon issue while disabling legacy authentication in a hybrid Exchange environment. Since I did not find any exact solutions, I thought I share my story about modern authentication in on-premises Exchange server and how it affects the mailbox migration account. Spoiler: it breaks the mailbox migration TL;DR– Exchange Online uses […]
Posted by Daniel Kovacs on September 25, 2025
https://f12.hu/2025/09/25/quicknote-hybrid-exchange-mailbox-migration-account-vs-modern-authentication-policy/
Powershell with Entra CBA – unattended access to Defender portal when Graph API or Application permission does not fit
One of my previous posts covered a “basic” way to track secure score changes using Graph API with application permissions. While I still prefer application permissions (over service accounts) for unattended access to certain resources, sometimes it is not possible – for example when you want to access resources which are behind the Defender portal’s […]
Posted by Daniel Kovacs on May 2, 2025
https://f12.hu/2025/05/02/powershell-with-entra-cba-unattended-access-to-defender-portal-when-graph-api-or-application-permission-does-not-fit/
How much time your users are wasting with “traditional” MFA?
Recently, I came across a post on LinkedIn which demonstrated that Passkey authentication is way faster than traditional Password+MFA notification login. It made me curious: how much time does it exactly take to do MFA? TL;DR– This report uses the SignInLogs table which needs to be configured in Diagnostic settings– Unfortunately I did not manage […]
Posted by Daniel Kovacs on January 4, 2025
https://f12.hu/2025/01/04/how-much-time-your-users-are-wasting-with-traditional-mfa/
Find clients authenticating from unassigned AD subnets – using Defeder for Identity
Housekeeping with Defender for Identity – finding unassinged AD subnets using the IdentityLogonEvents table
Posted by Daniel Kovacs on October 25, 2024
https://f12.hu/2024/10/25/find-clients-authenticating-from-unassigned-ad-subnets-using-defeder-for-identity/
Tracking Microsoft Secure Score changes
Microsoft Secure Score is a useful feature in the Defender portal, but I missed the alerting option.
Posted by Daniel Kovacs on May 6, 2024
https://f12.hu/2024/05/06/tracking-microsoft-secure-score-changes/
Reporting on Entra Application Proxy published applications – Graph PowerShell
I thought it will be a quick Google search to find a PowerShell script that will give a report on applications published via Entra application proxy, but I found only scripts (link1, link2, link3) using the AzureAD PowerShell module – so I decided to write a new version using Graph PowerShell. The script: Some story […]
Posted by Daniel Kovacs on April 4, 2024
https://f12.hu/2024/04/04/reporting-on-entra-application-proxy-published-applications-graph-powershell/
Playing with Microsoft Passport Key Storage Provider – protect user VPN certificates with Windows Hello for Business?
I’m really into this Windows Hello for Business topic… Recently, I was going through the “RDP with WHfB” guide from MS Learn (link) which gave me an idea: can this method be used to protect user VPN certificates? The short answer is: yes, but no 🙂 TL;DR– Depending on your current infrastructure, several options are […]
Posted by Daniel Kovacs on February 17, 2024
https://f12.hu/2024/02/17/playing-with-microsoft-passport-key-storage-provider-protect-user-vpn-certificates-with-windows-hello-for-business/
Convenience PIN policy enables Windows Hello for Business enrollment in Windows Security
Windows Hello and Hello for Business are usually mutually exclusive, but the Windows Security application is not aware of this when ‘Turn on convenience PIN sign-in’ is configured.
Posted by Daniel Kovacs on January 19, 2024
https://f12.hu/2024/01/19/convenience-pin-policy-enables-windows-hello-for-business-enrollment-in-windows-security/