Why Is Copilot Not Working in Windows 11? 8 Fixes That Actually Work in 2026

Why Is Copilot Not Working in Windows 11? 8 Fixes That Actually Work in 2026

Windows Copilot should be one of the best things about Windows 11. In reality, it is one of the most complained-about features Microsoft has shipped in years. The icon disappears. The sidebar refuses to open. It spins forever and loads nothing. Or it opens but does nothing when you give it a command. Millions of users across the US, UK, and Australia are hitting these problems — and Microsoft's own support pages are not exactly helpful. I have spent considerable time diagnosing Copilot issues on multiple machines running different builds of Windows 11. Here are eight fixes that actually work, in the order you should try them. Why Copilot Breaks So Often in Windows 11 Before the fixes, a quick explanation that saves you time. Microsoft has been in an awkward position with Copilot throughout 2025 and 2026. They pushed it hard into Windows 11, then pulled parts of it back after user complaints. Several Windows 11 updates — particularly KB5055523, KB5043076, and the January 2026 KB5074109 …