Apparently, they did. From higher sources, they have no plans to support W10. Their online version grabs higher fees, and hence, they are putting all their energies into the browser version, with ultimate phase out of desktop versions. Given this, they don't want to put the resources in to test W10 and W11 TT both. Additionally, they are betting that the loss of a bunch of W10 customers, will be made up with customers converting to their browser version (with higher fees).
Instead, they are giving lame excuse about security, even though W10 ESU exists through minimally October, 2026.
The oxymoron here is that they are blaming end of TT support for W10 on "security issues", when their browser-based solution wreaks from theoretical security issues (do you really want your data stored on their servers?)
Hence, the solutions are:
1) Move to another tax platform that supports W10 today;
2) Purchase a W11-ready machine (ludicrous option);
3) Upgrade existing W10 platform to W11, if your machine is compatible with W11;
4) Attempt to create/run a W11 VM (VirtualBox, Hyper-V, etc.), and see if TT will install/run OK on these;
5) Design a hack (shim) that will fool TT into thinking it's installing/running on a W11 machine, and
hope that the TT code runs OK;
