So it does work without SSL?
Yes
Same port?
No: 443 does not work. Orig. port 7000 didn't work
URL is exactly identical in both cases except for SSL:
Working URL: http://sys-testsp/Shared%20Documents/Forms/AllItems.aspx
Non-Working URL: https://sys-testsp.acmecorp.com/DocTest/Forms/AllItems.aspx (scrubbed)
Different site collections
Pointing to the exact same PDF (same file copied with the same name)?
Works with port 80, does not work with https.
What is the exact Acrobat version?
Acrobat: V 11.0.05
Reader: 11.0.05
What is the exact SharePoint version?
Sharepoint Foundation 2010
What is the exact error msg w/o abbreviations?
"The URL you have provided could not be reached. Please verify that the URL is correct and that the network location is reachable."
Have you tried it with a newly created PDF created by 11.x that's blank with a name like File.pdf
Yes, still no luck
Environment Windows 7 Pro SP1 + Hot fixes
Win2k8R2 Win2k8 Domain Functional Level
Web Client Services Enabled (set to automatic)
Registry enabled with AuthForwardServerList for WebClient Parameters