Hi friends!
Here’s a case that “Failed to install UltraPath, please retry.” is displayed during UltraPath installation.
[Symptom]
When UltraPath is being installed on a Windows host to which a large number of LUNs are mapped, "Failed to install UltraPath. Please retry." is displayed and the installation quits. The setup.log file contains Error code (0x000005b4).
[Fault Diagnosis]
If a large number of LUNs are mapped, the Windows operating system takes a long time to report added LUNs simultaneously. During this process, if UltraPath is installed, the UltraPath driver installation function UpdateDriverForPlugAndPlayDevices returns 0x000005b4 (ERROR_TIMEOUT) because waiting for the PnP message times out. As a result, the installation fails. According to the log information, the system has waited over four minutes before the ERROR_TIMEOUT is returned.
Figure1 Installation log
Through an analysis of the collected dump information, the internal implementation of UpdateDriverForPlugAndPlayDevices is concurrent processing, and the function waits for the PnP message.
Figure1 Dump information
Therefore, when the system is reporting added LUNs, the driver installation function returns a timeout error because waiting for the PnP message times out, resulting in the installation failure.
[Solution]
Solution 1: Open Device Manager and check whether device update is in progress. After device update is completed, install UltraPath.
Solution 2: Remove the initiator from the storage system or disconnect the cables between the host and the storage system. After all devices are deleted, install UltraPath, restart the host, and add the initiator or reconnect the cables.
