Download Ubuntu 25.04 from this link. Uninstall your current distro using the instructions in this link and then install the distro you downloaded by double clicking it. WSL should now open and use 25.04
Well, I just did a clean install of Office 365 on a clean install of Win 11 24H2 26100.3321 and classic Outlook was NOT installed and no option to install it either.
Because if you had bothered to look at my previous posts, I was saying that it was taking well over an hour to update to 26120.3073 as I was updating from the 26100.3037 RP build.