First of all I apologize for my lack of knowledge but I have inherited a situation that is driving me nuts especially as I don't have any in-depth experience of MDT deployments etc.
The problem I am seeing is when trying to deploy Windows 7 Enterprise with MDT2013 with WDS deployment shares via the PXE boot process.
This morning I attempted the PXE image of a Lenovo T450S laptop with a valid AD account with the required permissions and it worked. After entering the credentials it went into the automated deployment
process. At this stage I stopped the process.
Ten minutes later I attempted the same process, on the same laptop, connected to the same LAN cable and port, using the same user id. It failed.
I compared the BDD.LOG files from the successful and failed re-image processes and close to the end of the log from the successful process there are two differences from the failed logs.
Firstly there is the entry as follows which does NOT appear in the log file from the failed process:<![LOG[ERROR: Invalid OS GUID {5eb3bb25-c967-4d45-803f-f126f004eae9}
specified for task sequence W76402K specified]LOG]!><time="10:40:38.000+000" date="12-05-2016" component="LiteTouch" context="" type="1" thread="" file="LiteTouch">
Then a few lines later I see this which does NOT appear in the log file from the failed process:
<![LOG[TSGuid changed via TaskSequenceID = W76402K]LOG]!><time="10:40:40.000+000" date="12-05-2016" component="Wizard" context=""
type="1" thread="" file="Wizard"><![LOG[Property TSGuid is now = {f797a4d6-5767-4dc1-aa63-024e2ce2ddb2}]LOG]!><time="10:40:40.000+000" date="12-05-2016" component="Wizard"
context="" type="1" thread="" file="Wizard">
To my uneducated mind it would make more sense if theInvalid OS GUID error appeared in the logs when the process fails but it actually appears when it succeeds.
The way the problem manifests itself is when the process fails it drops out to a manual intervention at the Task Sequence stage as shown in the image below:
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If the process succeeds we see the same screen but without the labels (Computer Details, Product Key etc) under the Task Sequence label.
Initially I thought the problem was happening when the computer already had a record in AD from when it was previously re-imaged. I went through a series of tests last week where I re-imaged successfully, tried the process again with the AD record in place
and it failed. I then had the AD computer record deleted (waited for the ad to sync), and tried the re-image process again and it worked. I repeated this test at least 5 times with predictable results.
However, the fact that the re-image process worked this morning and then failed 10 minutes later (without touching the AD computer record) on the exact same machine and config has completely thrown
me a curve ball.
Could anyone help me else to look to find the cause of this problem as I am now totally stumped.
Thanks