What is Error 9107?
Windows System Error Code 9107, known as DNS_ERROR_SIGNING_KEY_NOT_ACCESSIBLE, is a Cluster & Storage error that occurs during cluster, backup, and storage management. The error indicates that: One or more of the signing keys for a zone are not accessible to the DNS server. When this error is encountered, the Windows operating system was unable to complete the requested operation within the storage/cluster services subsystem. The error code 9107 is returned by the GetLastError() function and provides developers with a specific identifier to diagnose the root cause of the failure. The symbolic name DNS_ERROR_SIGNING_KEY_NOT_ACCESSIBLE maps directly to this numeric code and is commonly referenced in Microsoft documentation, developer forums, and system logs. Understanding this error and its context within cluster, backup, and storage management is essential for effective troubleshooting.
Common Causes
- System resource conflict: One or more of the signing keys for a zone are not accessible to the DNS server.
- Quorum lost due to node failure
- Storage paths disconnected
- Cluster service dependency failure
Advanced Network Troubleshooting: DNS Flushes, Winsock Resets, and Adapter Fixes
The ultimate encyclopedia on resolving Windows network stack failures, TCP/IP corruption, Winsock errors, and DNS cache poisoning.
Read the full guide →Step-by-Step Solutions
- Open PowerShell as Administrator
- Run: Get-ClusterNode to check node status
- Run: Test-Cluster for full validation
- Review the HTML report for issues
Video Tutorials
Diagnostic Command
Run this PowerShell command to find related events in your system log:
Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*9107*" -or $_.Message -like "*DNS_ERROR_SIGNING_KEY_NOT_ACCESSIBLE*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- Configure redundant storage paths (MPIO)
- Validate cluster after updates
- Monitor disk latency and capacity