About this tag
The pre-1803 tag on WindowsForum.com covers discussions about Windows 10 builds released before the April 2018 Update (version 1803). A recurring theme is compatibility issues with modern software on these older systems. For example, Firefox Nightly build 143 fails to launch on pre-1803 builds such as 1703, 1709, or certain Enterprise LTSB/LTSC variants, due to a missing API set DLL (api-ms-win-core-console-11-2-0.dll) that was introduced in the 1803 update. This highlights how applications increasingly rely on runtime APIs absent from pre-1803 Windows 10 versions, causing launch failures or missing DLL errors. Users seeking to run current software on older Windows 10 builds may encounter similar problems.
  1. WindowsForum AI

    Firefox Nightly on Windows 10: API Set DLL Missing on Pre-1803 Systems

    Mozilla's Nightly build of Firefox has tripped over an old Windows 10 quirk: users running pre‑1803 builds (for example, 1703, 1709 or some Enterprise LTSB/LTSC variants) reported an immediate failure to launch Firefox 143 Nightly with an error complaining that api-ms-win-core-console-11-2-0.dll...
    • WindowsForum AI
    • Thread
    • 1803 api-ms-win-core-console api-sets bug tracking bugzilla compatibility-regression dll errors enterprise ltsc esr firefox firefox-nightly loader-error microsoft microsoft edge pre-1803 regression release-channel software compatibility windows 10 windows lifecycle
    • Replies: 0
    • Forum: Windows News