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Hi @noura21,
are you speaking about download from the splunk site at the URL https://www.splunk.com/en_us/download/splunk-enterprise.html ?
Usually download automatically starts an d it's possible to force download with the button "Try this URL" https://download.splunk.com/products/splunk/releases/8.2.5/windows/splunk-8.2.5-77015bc7a462-x64-rel...)
Ciao.
Giuseppe