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BSOD on PPPoE connection start (only LAN, and PPPoE, other disabled) #296
Windows 7 (7601)
Bug detected in NPCAP versions 0.9991 - 1.20
If adapters other all enabled, PPPoE not create BSOD, and but create error 813.
If all disabled, and LAN enabled,. on PPPoE start BSOD.
Thank you for reporting this. Please send the kernel dump file (C:\Windows\Minidump\*.dmp) to dmiller@nmap.com so that we can analyze the crash and fix this issue.
hi this software collect all of problem with own
i can not search all of them sorry
i use widows 7 in pc and use adsl modem
after install this software because Dps Meter need this my internet connection disconnected
after uninstall back to normal
do you know way can use this software without problem or it is impossible?
After investigating some of the other reports with crash dumps, this BSoD appears to be caused by another upper-layer driver creating an invalid OID request object that only causes a bugcheck when Npcap passes it to NdisAllocateCloneOidRequest(). Here is a dump of the request object recieved directly from ndisFDoOidRequestInternal():
@jtippet Can you comment on whether my analysis is correct? Is raspppoe.sys generating an invalid OID request header here, or should Npcap be performing some additional validation/transform before attempting to clone the request?
It looks like this bug is related to VMware. I can now reproduce this bug within a virtual machine. There are several ways to trigger this bug.
All tests were performed on Windows 10 21H2, build 19044.5131, running inside VMware Workstation 17:
First, as mentioned in issue BSOD during VMware player (network driver) installation #729, if Npcap is installed on the machine, installing VMware Workstation/Player triggers a BSOD. (You can install VMware Workstation/Player in a virtual machine even if the host does not support nested virtualization, triggering the bug only requires VMware's virtual network adapter driver)
Second, if I install VMware Workstation first and then install Npcap, everything seems to work fine. However, once a PPPoE connection attempt is made, it triggers a BSOD.
After both Npcap and VMware Workstation are installed, if I disable the two virtual network adapters added by VMware Workstation(from Network Sharing Center -> Change Adapter Settings) and then dial a PPPoE connection, no BSOD occurs at this point. But after that, if I re-enable VMware's virtual network adapters without restarting the host, it triggers a BSOD， either the pppoe is connected or disconnected.
Further testing has revealed that only VMware's Host-Only network adapter (VMnet1 by default) triggers this bug, while the NAT network adapter does not. Therefore, my current walkaround is to disable the Host-Only adapter, which is rarely used. It seems the VMnet8 will also trigger this bug on my physical machine, and I found another walkaround: just uncheck NPCAP in those conflicting network adapters' property, reboot, and no more BSOD while dialing ppoe
It seems that VMware is not the only driver triggers this bug. I just found that the "Bluetooth Network Connection" on my physical machine will also triggers this bug.
It seems that VMware is not the only driver triggers this bug. I just found that the "Bluetooth Device (Personal Area Network)" on my physical machine will also triggers this bug.
Same here, PPPoE dials fine after disables Bletooth Pwersonal Area Network. Goes into BSOD if I enable it while PPPoE is connected.
The workaround is to disable "Npccap Packet Driver (NPCAP)" for Bluetooth Device (Personal Area Network).
It occurs to my machine, PPPoE over Intel i219-V ethernet connection with Windows11 24H2 26100.4349 and Npcap 1.82.
Here's the minidump analyzed by winDbg:
Minidump
Found a funny fact, if the connection name of the Duil-up connection contains Chinese characters, dialling it would lead to the BSOD we talked about. The annoying part is the default Connection name a zh_CN version of Windows (its default text encoding is GBK) would choose is 宽带连接, which definitely trigger the BSOD bomb XD.
What I've tested
Npcap installed ?
if conn_name contains Chinese char ?
After dialing
yes
yes
BSOD
yes
no
connected normally
no
yes
connected but failed after a second
Not sure if it's a Npcap issue or Win11's miss, but it's funny to see Windows struggling at multi-lang compatibility again.
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dmiller-nmap commentedon Mar 15, 2021
Thank you for reporting this. Please send the kernel dump file (
C:\Windows\Minidump\*.dmp) to dmiller@nmap.com so that we can analyze the crash and fix this issue.Soheil777 commentedon Mar 23, 2021
hi this software collect all of problem with own
i can not search all of them sorry
i use widows 7 in pc and use adsl modem
after install this software because Dps Meter need this my internet connection disconnected
after uninstall back to normal
do you know way can use this software without problem or it is impossible?
TauCu commentedon Aug 18, 2024
Just confirming this still happens on windows 10.
Setting up a PPPoE connection caused the bugcheck.
Not comfortable sending in minidumps, best I can do is this:
If you need more information I'll be keeping the full dump on my system for a while. Just tell me what you need.
Best of luck.
Fachep commentedon Aug 19, 2024
Same on Windows 11 Pro 23H2 22631.4037. Lots of softwares don't work well after bsod.
dmiller-nmap commentedon Sep 16, 2024
After investigating some of the other reports with crash dumps, this BSoD appears to be caused by another upper-layer driver creating an invalid OID request object that only causes a bugcheck when Npcap passes it to
NdisAllocateCloneOidRequest(). Here is a dump of the request object recieved directly fromndisFDoOidRequestInternal():@jtippet Can you comment on whether my analysis is correct? Is raspppoe.sys generating an invalid OID request header here, or should Npcap be performing some additional validation/transform before attempting to clone the request?
dmiller-nmap commentedon Oct 21, 2024
I've asked about this issue on Microsoft Q&A here: https://learn.microsoft.com/en-us/answers/questions/2108616/is-raspppoe-sys-creating-invalid-ndis-oid-request
@jtippet can you give us some guidance on this issue?
adamhj commentedon Dec 31, 2024
It looks like this bug is related to VMware. I can now reproduce this bug within a virtual machine. There are several ways to trigger this bug.
All tests were performed on Windows 10 21H2, build 19044.5131, running inside VMware Workstation 17:
Further testing has revealed that only VMware's Host-Only network adapter (VMnet1 by default) triggers this bug, while the NAT network adapter does not. Therefore, my current walkaround is to disable the Host-Only adapter, which is rarely used.It seems the VMnet8 will also trigger this bug on my physical machine, and I found another walkaround: just uncheck NPCAP in those conflicting network adapters' property, reboot, and no more BSOD while dialing ppoeadamhj commentedon Dec 31, 2024
It seems that VMware is not the only driver triggers this bug. I just found that the "Bluetooth Network Connection" on my physical machine will also triggers this bug.
TudorVoie commentedon Mar 6, 2025
The issue is still present, can somebody check why this is happening? I have attatched two mini dump files. Thanks.
030625-14546-01.dmp
030625-15515-01.dmp
etonline commentedon May 13, 2025
Same here, PPPoE dials fine after disables Bletooth Pwersonal Area Network. Goes into BSOD if I enable it while PPPoE is connected.
The workaround is to disable "Npccap Packet Driver (NPCAP)" for Bluetooth Device (Personal Area Network).
Check for invalid OID structures to avoid crash. Fixes nmap#296
xtellaris commentedon Jun 11, 2025
It occurs to my machine, PPPoE over Intel i219-V ethernet connection with
Windows11 24H2 26100.4349andNpcap 1.82.Here's the minidump analyzed by winDbg:
Minidump
xtellaris commentedon Jun 11, 2025
Found a funny fact, if the
connection nameof the Duil-up connection contains Chinese characters, dialling it would lead to the BSOD we talked about. The annoying part is the defaultConnection nameazh_CNversion of Windows (its default text encoding is GBK) would choose is宽带连接, which definitely trigger the BSOD bomb XD.What I've tested
Not sure if it's a Npcap issue or Win11's miss,
but it's funny to see Windows struggling at multi-lang compatibility again.