Still no luck.

After playing around with the cache idea in mind, I have noticed if the helper app is open the file opens sometimes (worked with Excel, but not Acrobat).

This is confirmed with looking for files created in the cache folder.

IE is either deleting or not creating the file in the cache.

In reply to Re^4: Content-Disposition... odd behavior in IE by Rodster001
in thread Content-Disposition... odd behavior in IE by Rodster001

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