Once upon a time…
I was helping a customer with his web application, which was dynamically generating Excel workbooks, but he was running into a complication that was happening on his site but not others. On this particular site, every time he tried to download one of the workbooks, he got the following error message from Internet explorer:
Internet Explorer cannot download <page name>.aspx from <server>. Internet Explorer was not able to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later.
This message can occur if Internet Explorer attempts to open a downloaded file in Office, but is unable to save the file to the local cache directory. The most common reasons for the behavior are: Continue reading Downloading Excel file: Internet Explorer cannot download ‘page’.aspx