Are you facing below issue while setting fresh Sitecore (9.x version) instance ?
Install-SitecoreConfiguration : Cannot validate argument on parameter 'Signer'. The “$_.HasPrivateKey -eq $true”
Then I would suggest to follow below steps sequentially as
- Close PowerShell session, where installation were going on.
- Remove/cut to other location all certificates from C://certificates
- go to installation path and open xconnect-createcert.json
- Now search key named as StoreLocation in this file
- and then change value as LocalMachine