Issue Status |
Symptoms
Blue screen (BSOD) with reference to the NNSDNS.sys driver caused by the firewall infrastructure of Adaptive Defense products. This issue may occur with any of these protections enabled on the affected endpoint: Advanced Protection, web protection, firewall protection, and web filtering protections.
Apply the available hotfix on the affected endpoint.
- Download and save the hotfix file to the endpoint:
hf-wgua1881-getdomainname.exe - Double-click the downloaded file.
- The hotfix installation does not require restarting the computer.
Note: To download an unattended or silent version of the hotfix, click here. The hotfix is applied after the next system restart.
Release Notes
Next, find all the changes the hotfix includes.
Affected Versions
- v8.00.21.X.
- From v8.00.22.0010 to v8.00.22.0022.
File Details
The hotfix updates the following files:
| File name | Location | File Version | Modified Date | Hotfix to be included in future versions? |
|---|---|---|---|---|
| NNSDNS.sys | C:\Windows\System32\Drivers\NNSDNS.sys (8.00.21.X Protections) | 1.3.0.121 | October 27th, 2023 | Yes v8.00.22.0023 |
| NNSDNS.sys | C:\Windows\System32\Drivers\NNSDNS.sys (8.00.22.X Protections) | 7.0.0.134 | October 26th, 2023 | Yes v8.00.22.0023 |
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_NNSDNS_GetDomainName | Revision [REG_DWORD] 1 | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Panda Software\Setup\Hotfix history\HF_NNSDNS_GetDomainName Revision | [REG_DWORD] 1 |
| HKEY_LOCAL_MACHINE\SOFTWARE\Panda Software\Setup\Hotfix history\HF_NNSDNS_GetDomainName | Result [REG_DWORD] 0 = Success | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Panda Software\Setup\Hotfix history\HF_NNSDNS_GetDomainName Result | [REG_DWORD] 0 = Success |
