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Windows 10 LTSB - UWF overlay RRS feed

  • Question

  • Does anyone know if Microsoft changes the way the UWF works in the latest Windows 10 Enterprise LTSB 2016?

    With the current version, the overlay is filled when saving a file in an excluded directory.

    If not, does anyone found an acceptable solution for this problem?

    Thanks,

    Monday, October 2, 2017 4:39 PM

Answers

  • No fix in 2016 released. This is a known issue, and the only work around is to store data in a separate unprotected partition.


    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Monday, October 2, 2017 11:55 PM
    Moderator

All replies

  • No fix in 2016 released. This is a known issue, and the only work around is to store data in a separate unprotected partition.


    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Monday, October 2, 2017 11:55 PM
    Moderator
  • If I'm just running Windows without our application, the overlay is still filled up by Windows itself.

    I disabled the majority of unnecessary Windows services and disabled the application logs, but the overlay continues to grow to the maximum value.

    Do you know if the DISK overlay type is as robust as the RAM overlay type?

    Thanks.

    Tuesday, October 3, 2017 1:28 AM
  • There are the event logs and the .NET assemblies that are possibly being optimized that are filling up the overlay. The UWFUtility that I released has an option to see what is in the overlay: http://annabooks.com/SW_UWFUtility.html

    The was another post recently that someone switched to Disk overlay and made the overlay about the size of the empty space, which appeared to resolve the issue. Not sure if it is true, but you can try it.


    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Tuesday, October 3, 2017 4:06 AM
    Moderator
  • Same here. And as an added bonus, they removed "get-files" which could hint at who is using your overlay. Now you have to hack some powershell to do it.

    After 3 days of just sitting there. I have

    Unified Write Filter Configuration Utility version 10.0.14393
    Copyright (C) Microsoft Corporation. All rights reserved.

    The overlay consumption is 146 MB.

    And here is everything over 1MB (Simple powershell, work in progress.)

      181  1134592 \Users\X\AppData\Local\Microsoft\Windows\WebCache\WebCacheV01.dat::$DATA                                         
      414  1298432 \Windows\System32\sru\SRUDB.dat::$DATA                                                                               
      283  1437696 \Windows\System32\PerfStringBackup.INI::$DATA                                                                        
        9  1593344 \$Mft::$DATA                                                                                                         
      374  1650688 \Windows\System32\config\SYSTEM.LOG1::$DATA                                                                          
      267  2015232 \Windows\System32\CodeIntegrity\bootcat.cache::$DATA                                                                 
      376  2088960 \Windows\System32\config\SYSTEM::$DATA                                                                               
      195  2097152 \Users\X\AppData\Local\TileDataLayer\Database\EDB.log::$DATA                                                     
      285  2101248 \Windows\System32\SleepStudy\UserNotPresentSession.etl::$DATA                                                        
        6  2252800 \$Extend\$UsnJrnl:$J:$DATA                                                                                           
      342  6291456 \Windows\System32\WDI\LogFiles\BootCKCL.etl::$DATA                                                                   
      277  8392704 \Windows\System32\LogFiles\WMI\LwtNetLog.etl::$DATA                                                                  
      495  8413184 \Windows\TmpFile1::$DATA                                                                                             
      372 11268096 \Windows\System32\config\SOFTWARE.LOG2::$DATA                                                                        
      358 12627968 \Windows\System32\config\COMPONENTS.LOG1::$DATA                                                                      
      373 14045184 \Windows\System32\config\SOFTWARE::$DATA                                                                             
      360 14544896 \Windows\System32\config\COMPONENTS::$DATA                                                                           
        7 45613056 \$LogFile::$DATA  

    Note, whatever EVIL that does it, hasn't yet restarted WindowsUpdate/UpdateOrgestrator.

    AppXSvc (Manual) was started at some stage.

    ClipSVC (Manual) stopped.

    DsSvc (Manual) started by something.

    StorSvc (Manual) started by something.


    =^x^=

    Monday, December 4, 2017 6:00 AM
  • I created a utility that has the get-overlay files feature: http://annabooks.com/SW_UWFUtility.html 

    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com


    Monday, December 4, 2017 4:12 PM
    Moderator
  • Does anyone know if Microsoft changes the way the UWF works in the latest Windows 10 Enterprise LTSC 2019?
    Tuesday, July 16, 2019 2:13 PM
  • It behaves the same way with regards to the overlay.

    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Wednesday, July 17, 2019 1:51 AM
    Moderator
  • It behaves the same way with regards to the overlay.

    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Does it mean UWF is somewhat not useable if you have a machine running (for days?!)

    Windows Embedded Standard 7 / Windows 10 (IoT) Client Engineer/Architect //Germany

    Thursday, September 26, 2019 1:23 AM
  • That depends on how you configure UWF. The issue is that big data should be stored on a second unprotected partition/drive rather than a write through section. 

    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    Monday, September 30, 2019 3:48 AM
    Moderator
  • That depends on how you configure UWF. The issue is that big data should be stored on a second unprotected partition/drive rather than a write through section. 

    Sean Liming - Book Author: Starter Guide Windows 10 IoT Enterprise - www.annabooks.com / www.seanliming.com

    since XPe and EWF I was using a workaround which uses junctions. This is all fine but needs some more attention while maintaining it. I was hoping to work with UWF and not using this workaround anymore to have a more streamline "experience". Anyway thanks for the info that an absolute key feature for Embedded is buggy since day 1.

    Windows Embedded Standard 7 / Windows 10 (IoT) Client Engineer/Architect //Germany

    Monday, September 30, 2019 10:40 AM