Error that caused initial install fail:
[10/16/2018 22:07:23.0758] [2] Beginning processing install-MsiPackage
[10/16/2018 22:07:23.0773] [2] ProductCode is 'c3f10d8c-bd70-4516-b2b4-bf6901980741'.
[10/16/2018 22:07:23.0773] [2] PackagePath was set to 'C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI'; changing to full path 'C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI'.
[10/16/2018 22:07:23.0789] [2] ProductCode is 'c3f10d8c-bd70-4516-b2b4-bf6901980741'.
[10/16/2018 22:07:23.0805] [2] Installing MSI package 'C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI'.
[10/16/2018 22:07:23.0805] [2] No updates directory was specified for the msi installation.
[10/16/2018 22:07:23.0805] [2] Installing a new product. Package: C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI. Property values: ALLUSERS=1 REBOOT=ReallySuppress
[10/16/2018 22:07:24.0102] [2] [ERROR] Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '.
[10/16/2018 22:07:24.0102] [2] [ERROR] Fatal error during installation
[10/16/2018 22:07:24.0102] [2] [ERROR] Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '.
[10/16/2018 22:07:24.0102] [2] [ERROR] Fatal error during installation
[10/16/2018 22:07:24.0102] [2] [ERROR] Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '.
[10/16/2018 22:07:24.0102] [2] [ERROR] Fatal error during installation
[10/16/2018 22:07:24.0106] [2] Ending processing install-MsiPackage
[10/16/2018 22:07:24.0106] [1] The following 1 error(s) occurred during task execution:
[10/16/2018 22:07:24.0106] [1] 0. ErrorRecord: Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '.
[10/16/2018 22:07:24.0106] [1] 0. ErrorRecord: Microsoft.Exchange.Configuration.Tasks.TaskException: Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '. ---> System.ComponentModel.Win32Exception: Fatal error during installation
--- End of inner exception stack trace ---
at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
at Microsoft.Exchange.Management.Deployment.InstallMsi.InstallPackageFile(String packagePath)
at Microsoft.Exchange.Management.Deployment.InstallMsi.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.b__91_1()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)
[10/16/2018 22:07:24.0106] [1] [ERROR] The following error was generated when "$error.Clear();
install-MsiPackage `
-PackagePath ($RoleInstallPath + "TransportRoles\agents\Hygiene\ASDat.MSI") `
-LogFile ($RoleSetupLoggingPath + "\InstallASDat.msilog") `
-PropertyValues ("ALLUSERS=1") `
-UpdatesDir $RoleUpdatesDir
" was run: "Microsoft.Exchange.Configuration.Tasks.TaskException: Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '. ---> System.ComponentModel.Win32Exception: Fatal error during installation
--- End of inner exception stack trace ---
at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
at Microsoft.Exchange.Management.Deployment.InstallMsi.InstallPackageFile(String packagePath)
at Microsoft.Exchange.Management.Deployment.InstallMsi.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.b__91_1()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".
[10/16/2018 22:07:24.0106] [1] [ERROR] Installing product C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\agents\Hygiene\ASDat.MSI failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. '.
[10/16/2018 22:07:24.0106] [1] [ERROR] Fatal error during installation
[10/16/2018 22:07:24.0106] [1] [ERROR-REFERENCE] Id=TransportCommonComponent___3f4a70ff37b549999a228ec24821d0dc Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[10/16/2018 22:07:24.0106] [1] Setup is stopping now because of one or more critical errors.
[10/16/2018 22:07:24.0106] [1] Finished executing component tasks.
[10/16/2018 22:07:24.0184] [1] Ending processing Install-GatewayRole
[10/16/2018 22:07:56.0902] [0] CurrentResult setupbase.maincore:396: 0
[10/16/2018 22:07:56.0918] [0] End of Setup