“the publisher could not be verified…” pop-up

Hello
I am having issues trying desperately to disable the pop up message saying that the published could not be verified . I am running on windows 7 (64 bit) and the program who appears to pop the message is Internet Download Manager(it get’s annoying at window’s start up).
Things i did:
*Unchecked the “Always ask before opening this file”
*Disabled UAC from Control pa.
*I went to “Local Computer Policy / User Configuration / Administrative Templates / Windows Components / Attachment Manager” and changed to “Enabled”,included the ” .exe;” to the option box.
* Created a .reg file with the exist command Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Security] "DisableSecuritySettingsCheck"=dword:00000001
*Also at Internet options i set to “enabled” the Launching applications and unsafe files.

i did all these things and it still have the same problem.I tried to find something else for a solution on search but nothing different than i did.
Thank for upcoming help and sorry for misspell!!
Answer #1
You mean IDM won’t run ?
That’s strange…Maybe uninstall it and reinstall from a different download..
Answer #2
No it runs.But everytime it start’s the pop up appears.I want to disable it
Answer #3
Registry mod is the simple way:
Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations
Value: LowRiskFileTypes
Type: REG_SZ
Data: .exe