> Source: [sk179567](https://support.checkpoint.com/results/sk/sk179567)

# sk179567 - BSOD during Windows OS upgrade when Firewall blade is active

| Property | Value |
|----------|-------|
| Solution ID | sk179567 |
| Date Created | 2022-06-20 |
| Last Modified | 2022-07-03 |
| Technical Level | General |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |
| OS | Windows |

## Symptoms

- BSOD during Windows OS upgrade when Firewall blade is active on Endpoint Security Client PC.

## Cause

Deadlock between vsdatant.sys and cpbak.sys while getting FILE_ID_INFORMATION in vsdatant.sys.

## Solution

This problem was fixed. The fix is included in:

* [Enterprise Endpoint Security E86.25](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk177584)

In case you have a lower version, [Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.  
For faster resolution and verification, collect [CPinfo](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk92739) files from the Management Server and Security Gateways / Cluster Members involved in the case.

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