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Npcap 1.71 error on channel change #649

@Frakt

Description

@Frakt

I have updated Npcap to 1.71 with the latest version of Wireshark (but the binaries on Npcap website produce the same error) and I have error 0x7b when trying to switch channel (and ask different capabilities) through WlanHelper. However I'm able to switch the WNIC in monitor mode (confirmed on capture as well).

PS C:\Windows\System32\Npcap> .\WlanHelper.exe
WlanHelper for Npcap 1.71 ( https://npcap.com )
...
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" mode monitor
Success
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" channel 36
Error: makeOIDRequest::My_PacketOpenAdapter(\Device\NPCAP\{fedafee4-b20a-477b-b0c0-a63dfce41d3d}) error 0x7b
(to use this function, you need to check the "Support raw 802.11 traffic" option when installing Npcap)
Failure
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" mode
Error: makeOIDRequest::My_PacketOpenAdapter(\Device\NPCAP\{fedafee4-b20a-477b-b0c0-a63dfce41d3d}) error 0x7b
(to use this function, you need to check the "Support raw 802.11 traffic" option when installing Npcap)
Failure
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" modus
Error: makeOIDRequest::My_PacketOpenAdapter(\Device\NPCAP\{fedafee4-b20a-477b-b0c0-a63dfce41d3d}) error 0x7b
(to use this function, you need to check the "Support raw 802.11 traffic" option when installing Npcap)
Failure

I've ticked the "Support raw 802.11 traffic" at installation.
My WNIC is an Alfa AWUS036ACM using a Mediatek MT7612U chipset in case that is relevant.
I'm on Windows 10 version 21H2 (build 19044.2130).

If I'm rolling back to the Npcap 1.60 I don't have this error anymore.

PS C:\Windows\System32\Npcap> .\WlanHelper.exe
WlanHelper for Npcap 1.60 ( http://npcap.org )
...
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" mode monitor
Success
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" channel 36
Success
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" mode
monitor
PS C:\Windows\System32\Npcap> .\WlanHelper.exe "Wi-Fi 2" modus
hrdsss, ofdm, erp, ht

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