Install-SitecoreConfiguration : Cannot validate argument on parameter 'Signer'. The “$_.HasPrivateKey -eq $true”

 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

Hope this will help to resolve above issue.

Install-SitecoreConfiguration : Missing required parameter: name

This may be one issue at the time of Sitecore instance setup and to resolve this issue, please follow below steps

Open and update files for 

• sitecore-XP0.json
• xconnect-xp0.json

and once opened file, search "Arguments": { "Name" 

If found then replace with "Arguments": { "name" and save.

Now execute installation script again, hope this will help.