I'm trying to install Sitecore 9.3.0 & Sitecore 10.0.0 in my local machine and both the installations fail with the same error.

Tried with both the set.exe & the SIM tool. Did not change any configurations.

Searching for this error on SSE says, it could due to the license. But this is a valid one provided by my company and others were able to install without any issues with the same one.

I tried installing it in the C:Drive and then the D:\ drive too. It fails at the final step...after the Databases are created. Solr installation goes fine too. I browse the solr url in the browser and it opens fine.

This is the error I see in the log after installing with SIM.

> [-------------------- PrepareCores [1] : Copy
> --------------------------------] Install-SitecoreConfiguration : Cannot validate argument on parameter 'Source'. The " Test-Path $_ "
> validation script  for the argument with value
> "D:\Solr840\server\solr\configsets\_default\*" did not return a result
> of True. Determine  why the validation script failed, and then try the
> command again. At line:12 char:1
> + Install-SitecoreConfiguration @installParams *>&1 | Tee-Object xconne ...
> + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
> + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Install-SitecoreConfiguration