I have been using IE9 successfully with PD9 and PD10 on three different computers over the last year and a half, or since it came out.
Is it possible that your anti-virus/firewall solution is not permitting PDR10.EXE access to the Internet? That issue has been reported before. With Windows7, both 32-bit and 64-bit, IE9 has worked just fine on my computers using BitDefender as the security solution. I can't remember if I had to specifically create a firewall rule for PD10, but I don't recall doing so.
Hope this helps and let us know how you make out. Have a great day.
Regards,
-Phil
Windows 10 Pro x64
Dell XPS 8930
Intel CoreT i7 (4.6 GHz)
32 GB DDR4-2666 RAM
1 TB PCIe -x4 SSD
NVIDIA GeForce RTX 2060
PD14 Ultimate x64, 4207
CD4 Ultra and AD6 Ultra
Bleeping Computer Malware Response Instructor