[SOLVED] Windows Server 2016 slow boot (Over 15 minutes in Boot-PreSession Init-Phase)

MasterOfChilli · Apr 17, 2023

Hello,

we are currently having problems with an Windows Server 2016 who takes aproximate 20-30 minutes to boot.

Most of the time the server is in the Boot Pre Session Init Phase and shows the following picture --> attached Boot_Screen.png

I have already created a boot trace dump for the Windows Performance Analyzer with the command

Code:

xbootmgr -trace boot -traceflags dispatcher+latency

I analyzed the dump but i couldnt find a specific driver etc. which may causes the slow boot --> attached Performance_Analyzer.png

Do you guys have any idea? Here is the link to the ETL-dump: boot_dispatcher+latency_1.etl
Many thanks in advance.

dodobw · May 25, 2023

were you able to fix this? i have the same issue with a RDS 2016 server, but it takes up to 2 hours. after boot, everything is working fine.

//not hardware related. on this esx host are running multiple other vms fine.

MasterOfChilli · May 25, 2023

Hi,

unfortunately we weren't abel to fix this.
Our Solution was to set up a completly new vm.

dodobw · May 25, 2023

Oh dear... but i expected this answer. i searched the web for hours, but nothing was working. thanks for your answer. im setting up a new rds right now. hope i will make it in time before they start working tomorrow.

cheers

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[SOLVED] Windows Server 2016 slow boot (Over 15 minutes in Boot-PreSession Init-Phase)

MasterOfChilli

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