[Bug] Claude Code version not updating after npm install -g

Bug Description
Claude stuck on version 2.0.64 even after doing npm i -g @anthropic-ai/claude-code@2.0.75 . Appears to succesfully update then claude launches in 2.0.64 anyway.

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.0.64
• Feedback ID: 55b4a2fb-f98a-40db-89c8-032d00b59827

Errors

[{"error":"_nA: Another process is currently installing an update\n    at HzA (file:///C:/Users/rcocks/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1339:1850)\n    at file:///C:/Users/rcocks/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2644:9943\n    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)","timestamp":"2025-12-22T10:35:39.090Z"}]