Add language for MFA

docs/access.md

@@ -3,10 +3,14 @@
 SMU HPC systems are directly accessible on campus via Ethernet, excluding
 dorms, and PerunaNet. All other networks require using the SMU VPN.
 Instructions for setting up and using the VPN can be found
-[here](https://www.smu.edu/OIT/Services/VPN).
+[here](https://www.smu.edu/OIT/Services/VPN). Multi-factor authentication
+is required to access HPC resources.
 
 ## HPC OnDemand Web Portal
 
+:::{important} Beginning **February 25, 2026**, SMU will be transitioning from Duo to Microsoft Authenticator as the primary multi-factor authentication (MFA). For more information, please visit the [Microsoft Authenticator](https://www.smu.edu/oit/services/microsoft-authenticator) page.
+:::
+
 ````{tab-set}
 ```{tab-item} M3
 M3 can be accessed directly from a browser via the [HPC OnDemand Web Portal](https://hpc.m3.smu.edu/), 
@@ -25,6 +29,10 @@ SSH clients available for different operating systems. The following instruction
 are for standard OpenSSH installations such as
 those found in Linux, macOS, and Windows (>=10) including WSL.
 
+```{warning}
+[Duo](https://www.smu.edu/oit/services/duo) is still required to access HPC resources via SSH. If you are not enrolled, please enroll here: [https://www.smu.edu/oit/services/duo](https://www.smu.edu/oit/services/duo).
+```
+
 ````{tab-set}
 ```{tab-item} M3
 1. Open a terminal (Terminal on macOS, PowerShell on Windows)

docs/accounts.md

@@ -113,6 +113,9 @@ connection to [PerunaNet](https://www.smu.edu/oit/services/wifi) or the [VPN](ht
 
 ### HPC OnDemand Web Portal
 
+:::{important} Beginning **February 25, 2026**, SMU will be transitioning from Duo to Microsoft Authenticator as the primary multi-factor authentication (MFA). For more information, please visit the [MFA page](https://www.smu.edu/oit/services/microsoft-authenticator).
+:::
+
 ````{tab-set}
 ```{tab-item} M3
 M3 can be accessed directly from a browser via the [HPC OnDemand Web Portal](https://hpc.m3.smu.edu/), 
@@ -131,6 +134,10 @@ SSH clients available for different operating systems. The following instruction
 are for standard OpenSSH installations such as
 those found in Linux, macOS, and Windows (>=10) including WSL.
 
+```{warning}
+[Duo](https://www.smu.edu/oit/services/duo) is still required to access HPC resources via SSH. If you are not enrolled, please enroll here: [https://www.smu.edu/oit/services/duo](https://www.smu.edu/oit/services/duo)
+```
+
 ````{tab-set}
 ```{tab-item} M3
 1. Open a terminal (Terminal on macOS, PowerShell on Windows)

docs/quickstart.md

@@ -10,6 +10,10 @@ This guide walks you through accessing the SMU **M3 Cluster** and running your f
 
 ## Accessing the M3 Cluster via SSH
 
+```{warning}
+[Duo](https://www.smu.edu/oit/services/duo) is still required to access HPC resources via SSH. If you are not enrolled, please enroll here: [https://www.smu.edu/oit/services/duo](https://www.smu.edu/oit/services/duo).
+```
+
 > Remember to replace example terms (like `username` and `slurm_account_name`) with your own credentials.
 
 ### 1. Open a Terminal