无法呈现网址。无法从 url 获取图像。导航超时
我有一个 ASP.NET Web 应用程序，其中包含 Winnovative HTML 到 PDF 转换器。
这已经运行了一年多，成功生成了 PDF，
但是，这不再起作用，返回的错误是：
Could not render the url. Could not get image from url.Navigation timeout..
我已经检查了 Winnovative FAQ，他们建议向 PdfConverter 的实例添加 NavigationTimeout。我添加了以下内容：
PdfConverter.NavigationTimeout = 500
但是，这并没有修复错误。此外，直接在浏览器中加载时，转换的页面只需要几分之一秒的时间即可加载，因此我不认为这是呈现页面的性能问题。
以前有人遇到过这个问题吗？是否有任何已知的解决方案/原因？
I've got a ASP.NET web application which contains the Winnovative HTML to PDF Converter.
This has been running for over a year successfully generating PDFs
However, this is no longer working, and the error being returned is:
Could not render the url. Could not get image from url.Navigation timeout..
I've checked the Winnovative FAQ and they suggest adding a NavigationTimeout to the instance of the PdfConverter. I've added the following:
PdfConverter.NavigationTimeout = 500
However, this has not fixed the error. Furthermore, the page being converted only takes a fraction of a second to load when loading directly in the browser, so I don't believe its a performance issue with the page being rendered.
Has anyone experienced this problem before? Are there any known solutions/causes for this?
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最后我发现发生这个错误是因为我们试图从 HTTPS 文件请求 PDF。
但我无法解决原因。
如果您有答案，请参阅此问题：
从 HTTPS 生成 PDF 会导致错误
In the end I found out this error was occuring because we were trying to request a PDF from a HTTPS file.
I weren't able to solve why though.
Please see this question if you have an answer:
Generating PDF from HTTPS causes error
如果其他人收到此错误：在我们的示例中，在 IIS 8.5 上运行，将应用程序池从 ApplicationPoolIdentity 更改为 Network Service 修复了该错误。所以看来这是一个文件夹权限问题。网络服务并不理想，实际上应该设置实际的文件夹权限。
If anyone else gets this error: In our case, running on IIS 8.5, changing the application pool from ApplicationPoolIdentity to Network Service fixed it. So it seems it is a folder permission problem. Network service isn't ideal and really the actual folder permissions should be set.