执行 rustup update 失败

rustup update
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
info: checking for self-updates
info: downloading self-update
error: could not download file from 'https://mirrors.ustc.edu.cn/rust-static/rustup/archive/1.26.0/x86_64-pc-windows-msvc/rustup-init.exe' to 'D:\ProgramData\Rust\.cargo\bin\rustup-init.exe': http request returned an unsuccessful status code: 403