Published: October 16, 2017
SoftPAC: Startup logic doesn't run, I/O isn't enabled, and Message Queue displays I/O errors
Versions affected: All versions only when running on Windows 8 or higher
Note: This KB is for information only. This issue affects SoftPAC running on Windows 8 or higher. It does not affect PAC Sim.
After you power up a PC running Windows 8 or higher, you may notice in SoftPAC:
- The I/O is not enabled.
- I/O errors are displayed (SoftPAC > Overview tab > Strategy Status > Messages).
- The strategy restarts from where it left off (that is, the startup logic wasn't executed).
These issues happen only when all of these conditions are true:
- You have powered up your PC. Note that restarting the PC (Windows > Power > Restart) does not result in these issues.
- Windows Fast Startup is enabled (Windows > Power Options > Choose what the power buttons do)
- SoftPAC Start Type is Automatic (SoftPAC > Overview tab)
- The strategy is configured to save to flash memory and the autorun flag is set (PAC Control > Strategy Options > Download tab).
Turn off Windows Fast Start:
- In the Windows task bar, right-click the Start menu icon, and then click "Power Options."
- For Windows 8.x:
– In the Power Options window, click "Choose what the power button does."
– For "When I press the Power button," select "Shut down."
For Windows 10:
– In the Power Options window, click "Choose what the power buttons do"
– In the System Settings window, if you see the "Change settings that are currently unavailable" option, click it to display the Shutdown settings.
– Then, under Shutdown settings, uncheck "Turn on fast startup (recommended)."
In a future release, SoftPAC Monitor will display a message under the Auto Start option to remind you to turn off Windows Fast Start.
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