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Server Freezing

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Server Freezing

If you are working with a server that is Freezing make sure to check the following items: 

  • Resources used
    • If anything is maxing out, enable "cmd line" column in task manager and see what is causing it
      • EX: Process; Run32.dll > cmd line can show print spooler to show you the printer, driver, etc is causing the resources to be used/maxed out
    • If from print spooler (usually run32.dll w/ cmd line referencing print spooler)
      • Verify if the print driver being used is HP Unviversal
        • If it is, change to a Printer specific driver
      • Verify the driver used is the same model as the actual printer
        • not a Brother driver for a HP printer or wrong 
    • If Full SQL (k1) see what the Memory max 
  • Raid Status
    • Verify if the RAID is showing rebuilding or degraded
      • Degraded means there is a bad hard drive and if it continues to freeze, we need to remove the bad one
  • Run Crystal Disk
    • Install 
      • Check both hard drives to see if any of them are bad
      • If one is bad, and we continue to get freezing, we need to remove the bad drive
  • If the server is a VM
    • Log into the Host while the VM is frozen to make sure the Host isn't frozen too
      • If it is, then the Host is the issue
    • See if you can log onto the VM via Hyper-V
      • If you can and it is fully operational then it could be DNS or Networking
    • If you can't, restart the VM in Hyper-V
      • This is safer on the Hardware than hard rebooting
  • Check Event Viewer & SQL
    • Check for errors in Event Viewer
      • Check System then application. 
        • It might be best to filter results for Critical, Errors, and Warnings (sometimes)
    • Check SQL Logs if only CS is freezing to see what is happening
  • If we think it is hardware
    • Try to boot to each hard drive separately to see if one is bad (won't boot) or very unresponsive 

If the server isn't booting properly

  • Make sure there are NO USB devices plugged in and try again
  • Boot to each hard drive separetly
  • Make sure power light is coming on
  • Make sure monitor is plugged in (Can you see in LMI too?)

If the server keeps freezing before you can evaluate/check:

  • Log in on after a reboot and tell the caller not to start anything
  • Immediately stop IIS, SQL, Main Engine
    • This is to reduce the resource use to hopefully give you time to check Event Viewer, then Cyrstal Disc, etc
    • Try Printing? 
  • If continues to freeze with everything disabled, that points to hardware failure, Run a virus scan, etc.
  • After you check everything (either can't find anything or you made a change to fix)
    • start 1 thing at a time giving it a little time to come up. Then if you start freezing after start one item then that could be the culprit (or the resources used enough to cause a freeze - possible hardware failure)
      • I would start with SQL, then IIS (if freezes there, could be getting hit externally), then Main Engine, then a couple of devices at a time (controlled) then try printing while you are checking Task Manager

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