@yura:
Thanks for the HardwareIDs.
To be able to add the support of your specific Samsung NVMe SSD by the mod+signed Samsung NVMe driver v2.0.8.1611 I need the following information:

1. Which architecture (32/64bit) has your OS?
2. Which is the size of the NVMe SSD?

   Zitat von yura im Beitrag #104

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   Please! Who know how to instal Samsung PM1725b 1.6Gb into Windows Server 2012 Standard.

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   I suspect, that you meant 1.600GB. Am I right?
3. To which generation (HHHL or SFF) belongs your NVMe SSD?

@yura:
Attached is the requested freshly modded and signed 64bit Samsung NVMe driver v2.0.8.1611, which hopefully will work with your NVMe SSD and Windows Server 2012.
Don't forget to import the Certificate according to >this< guide, before you are going to updated the driver of the NVMe Controller (listed within the "Storage Controllers" section of the Device Manager).
Good luck!

@yura:
That is a pity.
Please do a deeper look into the posts from other users, who had written their experiences with mod+signed Samsung drivers. Maybe you or another user with a similar problem can find a solution.

@yura:
Depending on the Windows Server 2012 Edition you are running, it may be better to install an NVMe driver, which has been designed for Win8/8.1/10.
Please try to install the related driver variant, which is attached.
Good luck!

@yura:
I am sorry about your test results, but I obviously am not able to help you by simply modifying the INF file.
My advice: Use the generic MS NVMe driver.

@yoshmann:
Welcome to the Win-RAID Forum!
Where did you try to activate the Write-Caching of your NVMe SSD within the Device Manager?
What does the "Policies" tab show after having done a right click onto the NVMe SSD (shown within the "Disks" section) and chosen the option "Properties"?

Happy New Year!
Dieter (alias Fernando)

@yura:
AFAIK the MS NVMe Hotfixes for Win7 and Windows Server 2008 R2 work with Server 2012 as well.
You can find them on top of >this< post.