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Questions tagged [uwf]

UWF stands for Unified Write Filter which is part of Windows 10 Enterprise or Windows 10 Education.

UWF stands for Unified Write Filter which is part of Windows 10 Enterprise or Windows 10 Education.

Unified Write Filter (UWF) protects the contents of a volume by redirecting all write operations on that volume to the overlay, which is a virtual representation of the changes to the volume. Conceptually, an overlay is similar to a transparency overlay on an overhead projector. Any change that is made to the transparency overlay affects the projected picture as it is seen by the viewer. However, if the transparency overlay is removed, the underlying picture remains unchanged.

All information in the overlay is lost after a device restarts or experiences a power loss, regardless of how the overlay is stored.

21 questions
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Turn Windows 10 Pro into Thin Client - Unified Write Filter

Long time reader, first poster. We use Thin Clients in the company and while they serve a role I have always wondered can we not enable the File Based Write Filter that makes a thin client (device using windows embedded 7 or IoT) so powerful on…
Mike Munro
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Handling NIC settings with UWF in Windows 10 enterprise

We are using UWF to protect our Windows 10 IoT Enterprise LTSB machines which run in a kiosk mode with our own software. For the latest product, we have made a software shell/wrapper around the WMI Win32_NetworkAdapterConfiguration class. Now the…
Gforse
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Windows 10 IoT Startup extremely slow when UWF is turned on

The title of the question pretty much tells what is going on. If I disable the Unified Write Filter (UWF) on my Windows 10 IoT device the startup happens without any problem. It takes at most a minute, maybe a little bit more. The problem happens…
marijnr
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Is unified-write filter part of windows 10 pro?

I just heard about unified write filter. Is it available in windows 10 pro in a non-embeded environment? how can I set it up?
j0h
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UwfServicingMasterScript can not be edited due to missing permissions

I am using the optional Windows 10 feature "Unified Write Filter" (uwfmgr.exe) to protect kiosk machines from unwanted changes. Now in order to deploy custom updates, it includes a Servicing User under which changes to the protected volumes can be…
clamp
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Unified Write Filter servicing on Windows 10 enterprise not working as expected

Working with Windows 10 Enterprise, fresh image, only extra software is Notepad++, all updates applied. Now that's out of the way, we are testing Unified Write Filter (UWF), and it almost performs as expected, except for servicing mode. The TechNet…
ztnd13
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How to enable BSOD memory dumps with UWF

For our industrial computers we use Unified Write Filter (UWF) on the systems. But since a recent update on some computers (30+) we experience a BSOD during shutdown BUGCODE_NDIS_DRIVER, tried updating drivers but with no luck. So we want to debug…
Gforse
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Configure UWF via PowerShell DSC

Is there any way to configure the Universal Write Filter of Windows 10 via a Powershell DSC (Desired State Configuration)? I.e. configure exclusions, enable/disable etc. I did not yet find any DSC resource for it.
hoffimar
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Unified Write Filter slows down applications on Windows 10 IoT

Whenever I have UWF (Unified Write Filter) enabled on Windows 10 IoT, the application that it needs to run will run way to slow. It takes like 30 full seconds for the application to open. This slowness isn't the case when UWF is disabled.
marijnr
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How to protect an external volume with UWF on Windows 10?

I'm trying to use Unified Write Filter (UWF) to protect the memory of our embedded device that runs Windows 10. The problem is that it doesn't have any internal volume, and UWF won't work with USB flash drives. The only memory that is does have is…
marijnr
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what if overlay exceeds limit in Unified Write Filter(UWF)

I have read about unified write filter. The main working is that overlay is created which write the data on it instead of writing it on volume. Now i am facing a scenario that my overlay size is suppose 1024K and i write 1G data on the protected…
vicky
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HORM with a writable partition

To achieve faster boot/shutdown times, as well as securing the data of the operating system, I wish to utilize UWF with HORM (Hibernate Once, Resume Many). However, a requirement for HORM is that all "fixed volumes" are to be write protected. I…
Walkingsteak
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Include the Windows Event Log in UWF exclusions

I need to track unexpected restarts of an industrial system that uses UWF in Windows 10 LTSC, but I noticed that the Logs are cleaned when the system restarts, leaving only the last ones recorded when UWF was disabled. How can I include the Windows…
dwpessoa
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Enabling UWF freespace passthrough doesn't use extra available disk space, still stops at 1024mb

I am trying to use UWF overlay and I have it set to write the overlay to the disk instead of memory. In the docs it says I can use freespace passthrough feature if the overlay is on disk. This is supposed to let me use the additional space that is…
confusedsoul
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Exclude IE cookie from UWF in windows

I have set up the UWF on C: and excluded several folders that should be writable for my setup to work. Additionally I have an Internet Explorer cookie that is saved locally. According to Internet Options-> Browsing History -> Settings -> View Files…
Nostra
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