Compile time error

[ia91]

fresh install of Swift 5.6 on Windows 10 results in compile time error
"module compiled with Swift 5.5.1 cannot be imported by the Swift 5.6.1 compiler"

[ljluestc]

Hi, try the following script

Remove-Item -Path "C:\Library\Developer\Toolchains\swift-*" -Recurse -Force

Invoke-WebRequest -Uri "https://swift.org/builds/swift-5.6.1-release/windows10/swift-5.6.1-RELEASE/swift-5.6.1-RELEASE-windows10.exe" -OutFile "SwiftInstaller.exe"

Start-Process -FilePath "SwiftInstaller.exe" -ArgumentList "/S" -Wait

$env:Path += ";C:\Library\Developer\Toolchains\swift-5.6.1-RELEASE\usr\bin"
$env:SWIFT_EXEC = "C:\Library\Developer\Toolchains\swift-5.6.1-RELEASE\usr\bin\swift.exe"

swift --version

# Clean and rebuild your project
# Replace the following command with your project's build command
# For example, if you're using Xcode, replace it with "xcodebuild clean build"
# If you're using another build system or IDE, update the command accordingly
# Invoke-Expression -Command "<YourBuildCommand>"

Also this type of question maybe try to fix it yourself