An error occurred while validating the available time
The Windows Installer Service could not be accessed. Verify that the patch package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer patch package.This can occur if you are running Windows in safe mode, or if the Windows Installer is not correctly installed. Another version of this product is already installed. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.Only administrators have permission to add, remove, or configure server software during a Terminal services remote session.If you want to install or configure software on the server, contact your network administrator.The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program.
Search for an error occurred while validating the available time:
Verify that the program to be upgraded exists on your computer an The syntax of this command is: AT [id] [/DELETE] AT time [/EVERY:date | /NEXT:date] command The AT command schedules a program command to run at a later date and time on a server.