I have been trying to do this several times, but every time I attempt to do so, I get errors from DISM like 0x800f081e, 0x800f0922, and 0x8000ffff. I have used several tools so far, and all of them are failing with these error codes. An example of one of the errors I am getting is below(taken when using W10UI version 5.8): The install.wim file I am trying to slipstream updates into is a Windows 10 10240 image with all editions included within the image(Home, Pro, Education, Enterprise, and LTSB with their respective N and VL variants). None of the indexes inside of the install.wim have been updated. These are the update files I have and am currently trying to slipstream into the install.wim file: Windows10.0-KB3081452-x64_3163f6a4522049a3cf72586ce1d71db1b820646d.msu windows10.0-kb3161102-x64_2707817e3c3ae5c2451401355c699583694085c4.msu windows10.0-kb3172729-x64_3721c0d77731ca564387070698812dd496810bd8.msu windows10.0-kb4032695-x64_ce02f93e314452c2dabd74bfbe536db170560ce6.msu windows10.0-kb4051600-x64_faf3fa1332ac8e6337718ae3f19146220d62acdd.msu windows10.0-kb4093430-x64_f8d4096fb43e560fbc4afbff51700d2924054bc6.msu windows10.0-kb4471331-x64_f202191f922afe1ee58a77ae5419d8ec9faa18f7.msu windows10.0-kb4483228-x64_cae2089e899fa42def18989f9216f46d8b08d9be.msu The updates listed above were downloaded straight from Microsoft's update servers(got the links to them through GitHub from a file posted by abbodi1406, the creator of WHDownloader) except for the first one, which was downloaded from an archival site. Could someone please assist me in solving this issue?