A critical connectivity issue has surfaced for users of Veeam Recovery Media after updating to Windows 11 24H2, specifically build 26100.3194 and above.
This issue, traced to the February KB5051987 update, is breaking the connection between recovery environments and Veeam Backup Servers or network shares, hindering the ability to restore data during disaster recovery.
Common Error Messages Encountered
Affected users report several errors when attempting recovery, including:
- “Connection problems. An exception has been thrown by the target of an invocation.”
- “Failed to establish connection: no valid IP addresses were found.”
- “Unable to establish authenticated client-server connection. A call to SSPI failed…”
- “The remote procedure call failed and did not execute.”
These errors clearly point to network stack failures and authentication issues, likely tied to system-level security changes introduced in KB5051987.
Root Cause and Workaround
While the root cause remains under joint investigation by Microsoft and Veeam, preliminary analysis implicates security and network protocol alterations made in the KB5051987 patch.
Workaround Recommendation:
Use Veeam Recovery Media created on systems running Windows 11 build 26100.3037 or earlier. These versions are not affected by the current network connectivity problems.
Note: If using recovery media from a different machine, ensure it includes the correct network, storage, or RAID drivers, or the recovery attempt may still fail.
What’s Next?
Veeam and Microsoft have acknowledged the issue and are actively working toward a permanent fix. Users should:
- Avoid updating recovery systems beyond build 26100.3037 until a fix is confirmed
- Monitor Veeam and Microsoft announcements for hotfixes or updates
- Test recovery media compatibility before relying on it in production environments
Final Thought
This incident highlights the critical need for update validation in environments relying on backup and disaster recovery tools. Until resolved, IT admins and users should be cautious with recent Windows updates and proactively prepare alternative recovery strategies.
