I’m thinking something more on windows side. Since 4.26.1 came out when I got a windows update also :|. I would be on Linux, but the last time I did, with needed lots of work inside the editor (blueprints and materials for a windows game 
) it didn’t went well nor did it play nice with the rest of the team, since I had to use a local compiled version and our team isn’t that big to justify custom builds.