Failed to create the npcap service: 0x800f0203 on Windows 10 (Npcap 1.60, 1.70)

[jkonzen2022]

I am beyond frustrated. i have attempted to install Npcap 1.60 and 1.70 with the same result: Failed to create the npcap service: 0x800f0203. This is on a Windows 10 laptop. I get the same result every time. Please HELP! Cannot find adequate documentation or support for this issue. This is on a company laptop that I have admin rights to.

[dmiller-nmap]

0x800f0203 is SPAPI_E_NO_DRIVER_SELECTED. Please provide DiagReport output, Npcap installation logs (install.log and NPFInstall.log), and C:\Windows\INF\SetupAPI.dev.log, as described in the Npcap Users Guide.

[jkonzen2022]

As soon as I get a chance I will. Thank you! I was able to install Npcsp with no issues on a personal laptop so I’m sure it’s a corp IT issue.

John Konzen HVAC TB Sr Controls Technician Johnson Controls Nashville Branch Cell (615) 586-9886 Service (866) 825-8866 @.***

---

From: Daniel Miller @.> Sent: Thursday, July 21, 2022 12:52:41 PM To: nmap/npcap @.> Cc: John Milton Konzen @.>; Author @.> Subject: Re: [nmap/npcap] Failed to create the npcap service: 0x800f0203 on Windows 10 (Npcap 1.60, 1.70) (Issue #611)

0x800f0203 is SPAPI_E_NO_DRIVER_SELECTED. Please provide DiagReport output, Npcap installation logs (install.log and NPFInstall.log), and C:\Windows\INF\SetupAPI.dev.log, as described in the Npcap Users Guidehttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fnpcap.com%2Fguide%2Fnpcap-users-guide.html%23npcap-issues&data=05%7C01%7CJohn.Milton.Konzen%40jci.com%7Cd94c279bf7bf4b7dd17508da6b41cf90%7Ca1f1e2147ded45b681a19e8ae3459641%7C0%7C0%7C637940227645132494%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=SFhHqu%2FnopJ%2FtrQ4%2FZypd5uu2VTjNQ1ux2iUQE4qqb8%3D&reserved=0.

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[jkonzen2022]

install.log NPFInstall.log setupapi.dev.log I do not have a DiagReport as Npcap uninstalls as soon as the NDIS filter driver fails to install.

[dmiller-nmap]

Thanks, this was very helpful. The SetupAPI.dev.log shows that Windows was able to stage the npcap driver, but unable to install the "device" because it could not find a matching driver for the insecure_npcap hardware ID. I notice that it also has the same problem installing the Zscaler driver device zs_zapprd, which has the same class GUID, 4d36e974-e325-11ce-bfc1-08002be10318, which means NetService. This is very likely because of a group policy restriction preventing the installation of this device class. If this is the case, then the system would have enabled policy settings within "Computer Configuration > Administrative Templates > System > Device Installation > Device Installation Restrictions" in either Local or Group policy. Specifically, Npcap installation would be blocked by any of the following settings:

1. Prevent installation of devices not described by other policy settings
2. Prevent installation of devices using drivers that match these device setup classes: {4D36E974-E325-11CE-BFC1-08002BE10318}
3. Prevent installation of devices that match any of these device instance IDs: {7daf2ac8-e9f6-4765-a842-f1f5d2501341} or {7daf2ac8-e9f6-4765-a842-f1f5d2501351}

If any of these policies are enabled, setting any of the following policies will allow Npcap to be installed:

1. Allow installation of devices that match any of these device instance IDs: {7daf2ac8-e9f6-4765-a842-f1f5d2501341} or {7daf2ac8-e9f6-4765-a842-f1f5d2501351}
2. Allow installation of devices using drivers that match these device setup classes: {4D36E974-E325-11CE-BFC1-08002BE10318}
3. Allow administrators to override Device Installation Restriction policies

[ershersh]

I have the same problem when I try to install npcap, and get the result: Unknown error! 800f0203 Npcap LWF driver (with Wi-Fi support) has failed to be installed. Failed to create the npcap service for Win7, Win8 and Win10.

I try Npcap verion : 0.995 1.31 1.60 1.72, and set the policies mentioned by [dmiller-nmap], but none of them work and I get the same error notice. I also try other methods as CCleaner fix registry and reboot PC, and stil fail.

My windows version info: WIN10 21H2 (19044.2486) Education. logs: setupapi.dev.log install.log NPFInstall.log

Any more suggestions to solve this? It makes me tired, frustrated, and I can't use wireshark. Thank you!!

[rapa111]

I am very frustrated with npcap

[fyodor]

@rapa111 - based on the error code, your screenshot looks more like #135 .