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Random BSOD caused by NNSHTTP.sys
Related Products_
- Advanced EPDR
- Advanced EDR
Issue Status_
Open
Symptoms_
Endpoint protection network interception driver (NNSPRV.sys) random BSoD fix due to TCP handshake exception.
Affected protection versions:
- v8.00.25.000.X
To see your Advanced product version, see this article.
Solution_
A hotfix is available to resolve this issue.
To apply the hotfix on the affected endpoint:
- Download and save this hotfix file to the endpoint: hf-wgua4986-nnshttp-handshakeconnectoptions.exe
- Double-click the downloaded file. The hotfix does not require a restart of the endpoint.
However, under certain circumstances, you may be prompted to restart the hotfix to be fully applied. If you cannot restart the computer right away, select No when prompted.
Note: To install the unattended or silent version of the hotfix, click here. The hotfix is applied after the next system restart.
File Details
The hotfix updates the following files:
| File name | Location | File Version | Modified Date | Hotfix to be included in future versions? |
|---|---|---|---|---|
| NNSHTTP.sys | C:\Windows\System32\Drivers\NNSHTTP.sys | 7.0.0.411 | December 11th, 2025 | Yes |
Verify Hotfix Application:
To confirm the correct application of the hotfix, check the file version (in File Details section) or else, verify the values of these Registry keys:
| 32 bits Architecture | 64 bits Architecture | ||
|---|---|---|---|
| Registry Key | Value | Registry Key | Value |
| HKEY_LOCAL_MACHINE\SOFTWARE \Panda Software\Setup\Hotfix history\HF_NNSHTTP_HandshakeConnectOptions |
Revision [REG_DWORD] 1 |
HKEY_LOCAL_MACHINE\SOFTWARE \WOW6432Node\Panda Software\Setup\Hotfix history\HF_NNSHTTP_HandshakeConnectOptions |
Revision [REG_DWORD] 1 |
| HKEY_LOCAL_MACHINE\SOFTWARE
\Panda Software\Setup\Hotfix history\HF_NNSHTTP_HandshakeCon nectOptions |
Result [REG_DWORD] 0 = Success 1 = Not Applied 2 = Error |
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Panda Software\Setup\Hotfix history\HF_NNSHTTP_HandshakeConnectOptions | Result [REG_DWORD] 0 = Success 1 = Not Applied 2 = Error |
