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PENDING Boot WIM White screen hangs for 45min to hour or more!

BrandonTheEngineer

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I recently updated our boot image across our infrastructure and after doing so we started getting reports of users getting stuck at the white sccm winpe screen.( the one after it loads the wim itself). The issues do not affect all of our locations or dp's and when using bootable media created with the same boot image, it works just fine. We have verified that they get an ip and everything but the logs do not indicate anything really other than its loading the policies and it just sits there and eventually 45min to 2hours later , it will take us to the next screen which populates the TS list . We have looked at everything we could think of and are trying to find out if anyone else has experienced this. I have also created a brand new boot image from adk using Microsoft provided script that creates and puts in folder and i imported all drivers and added all the optional components we were trying to use . One caveat I can say is that we did add the powershell storage cmdlet via optional componets which we hadnt used before but again we tested using usb bootimage that was created from the same boot image and it works without any issues .
 
I am sure you have verified the location (DP) from where the boot image is being pulled. Have you verified if network connection speed of your distribution point in a boundary group is set to fast ?. Clients use this value when they connect to the distribution point. By default, the network connection speed is configured as Fast, but it can also be configured as Slow. There could be many other reasons for this issue, could you please attach the log file, I need to examine it once.
 
You also check whether speed is capped in IIS settings.

Open IIS on your DP > Default Web Site > Configuration Editor (Right Click) > Limits > Uncheck "Limit bandwidth usage"
 
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