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I'll try these.

I didn't realise there were so many still using SP2 (why?). I will consider building the next version with PyInstaller 5.13.2 again. But do note, that in the future that may not be possible any more, due to the changes they make. Consider upgrading to SP3. In the meantime, here is a build that should work on SP2. @davidz, Do you really mean you're on SP3? Because in my SP3 machine (VM), 2025.12.06.064237 works fine: [debug] Command-line config: ['-v'] [debug] User config "C:\Documents and Settings\Nico\Application Data\yt-dlp\config.txt": ['--rm-cache-dir', '--console-title', '--add-metadata', '--embed-thumbnail', '--convert-thumbnails', 'jpg', '--js-runtimes', 'quickjs', '--ppa', 'ffmpeg:-metadata synopsis=""', '-o', '~/Bureaublad/%(title)s.%(ext)s', '-S', 'res:1080,vcodec:avc,acodec:m4a', '--sponsorblock-remove', 'all', '-N', '6'] [debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out cp1252 (No VT), error cp1252 (No VT), screen cp1252 (No VT) [debug] yt-dlp version nicolaasjan/yt-dlp@2025.12.06.064237 (winXP_x86_exe*) [debug] Python 3.11.4 (CPython x86 32bit) - Windows-XP-5.1.2600-SP3 (OpenSSL 3.5.2 5 Aug 2025) [debug] exe versions: ffmpeg N-121824-g775b102182-WINXP (fdk,setts), ffprobe N-121824-g775b102182-WINXP, phantomjs 1.9.8 [debug] Optional libraries: Cryptodome-3.23.0, brotli-1.2.0, certifi-2025.11.12, mutagen-1.47.0, requests-2.32.5, sqlite3-3.50.4, urllib3-2.6.0, websockets-15.0.1, yt_dlp_ejs-0.3.1 [debug] JS runtimes: quickjs-2025-09-13 [debug] Proxy map: {} [debug] Request Handlers: urllib, requests, websockets [debug] Plugin directories: none [debug] Loaded 1853 extractors Removing cache dir C:\Documents and Settings\Nico/.cache\yt-dlp ..

Thank you. Sadly, I think the blue is uglier than the green, but .... it is what it is.

Yes, I confirm: version yt-dlp_x86_winXP.exe (2025.12.06.064237) does not work on Windows XP SP3! Version 2025.11.25.144622 worked fine!

Microsoft added the blue color to this progress bar with dark mode. I saw this in the Insider builds, it seems they added it in the latest CU. MS is gradually removing the ugly green.

And I am at schools for life my life cycle will never end only for home users yes!

Yes. I have two systems with native NVMe support in CSM and only one can boot - HP notebook on Core gen8 with InsydeH2O UEFI BIOS. But to do so I pushed to write my own DDO as in real mode this BIOS has bug which failed any Int 13h read or write on request with more than 8 sectors. No one bootloader can boot with such restriction and MS bootloader BOOTMGR that WRITES into file system under some circumstances can corrupt this file system even. Int 13h on Core gen10 on mobo with AMI UEFI BIOS does not work at all in Virtual 8086 Mode. And this is "must have" feature to boot any system that relates on this mode in boot time/work time icluding Windows 9x, Safe Mode of Windows 9x and DOS in protected mode with EMM386 or somthing like this. This problem is not new, RLoew faced with those buggy BIOSes with his AHCI driver too as the root of problem is the same - PCI Bus Master Controllers including ATA, AHCI and NVMe have identical program model of the I/O request: SG List pointing to the I/O buffers. There is solutions (double buffering) which can struggle with I/O buffers in the "wrong" memory but no one solution can solve the problem of SG List in the "wrong" memory as no one software except the driver itself "knows" about this list. So to solve the problem you have to replace buggy code of Int 13h handler in form of 1. new CSM DXE module, 2. DDO that supports NVMe or 3. driver in form of .SYS or .TSR

Hi nicolaasjan, I still use XP SP2 for now, I tested the latest yt-dlp 2025.12.06 and when I try to download a video it says: "... api-ms-win-crt-convert-l1-1-0.dll was not found." hmm, it doesn't work with any command I try. (example: yt-dlp --version ) Can you please keep yt-dlp be able to work on XP SP2 if possible? I would also like to say a big THANKS to you nicolaasjan for all your hard work with yt-dlp and making video download possible on older OSs.

1.68.0 does not install...

This happens on Windows 11 too. I hope that this will fixed soon. Bugs me a lot lol

The latest version of my yt-dlp is now built with PyInstaller 6.17.0. Unfortunately it is not compatible with Windows XP SP2 any more (got a personal message from a forum member).

Sorry to have to ask, but can anyone tell me why this strange color of the progress bar and folder names ? The blue is NOT the accent color, in case anyone is wondering. Happened after the latest two updates, one of Windows (26200.7309), second of SAB (3.9.19). LE : I tried with SAB disabled, still same crappy blue. So not caused by SAB, I think, but I would still love to get rid of the blue accent and progress bar, if anyone has any idea, I would be grateful.

This driver won't help you boot 9x from NVMe if the legacy 16-bit disk access provided via your motherboard's CSM mode does not work - I'm getting IOS error on bootup on both MSI B650M GAMING PLUS WIFI and MSI PRO H610M-B DDR4 motherboards when trying to boot 98SE from NVMe drive. Something to do with incorrect handling of interrupt 13h for NVMe drives when switching to protected mode or something... Omores on his videos use mostly ASUS motherboards and NVMe drives just work for him - ASUS does CSM differently? I've only tested this driver when booting 98SE from a SATA drive on my H610 motherboard while having a NVMe drive inserted in the mobo's slot, it works fine in that regard.

Latest version working on WinNT 4.0 is 3.63 but this not support write EDID. I tested other versions and they install OK but do not want to work: 3.64.555 - nothing but pstrip.exe in task manager 3.65 - nothing but pstrip.exe in task manager 3.75 - nothing but pstrip.exe in task manager 3.83 - Access violation 3.85 - Access violation P.S. All these versions work in WinXP and I can write EDID. https://www.upload.ee/files/18871199/PowerStrip3x.zip.html https://www.entechtaiwan.com/util/ps.shtm

Notepad2 1.0.12 Sonic Foundry Sound Forge 4.5 Resource Hacker 3.4.0.79 TextDiff 4.5 CrystalDiskMark 2.2 O&O Defrag 6.5 KillCopy 2.85

New build of post-deprecated Serpent/moebius for XP! * Notice: This repo will not be built on regular schedule, and changes are experimental as usual. ** Current moebius patch level should be on par with 52.9, but some security patches can not be applied/ported due to source milestone differences between versions. Test binary: Win32 https://o.rthost.win/basilisk/basilisk55-win32-git-20251206-23f410065-xpmod.7z Win64 https://o.rthost.win/basilisk/basilisk55-win64-git-20251206-23f410065-xpmod.7z repo: https://github.com/roytam1/basilisk55 Repo changes: - import from UXP: Issue #2489 - fix `color-mix` implementation. (103bd151) (1791c6a30) - import from UXP: Issue #2847 - Update tests and toolkit CSS to account for `windows-win11` (becf65d0) (bb4464dfb) - import from UXP: Issue #2869 - Make Purple Buffer additions check if cell is tenured. (34d1d5a6) (be165adf3) - ffvpx: update ffmpeg to 3.4.14 ( https://github.com/FFmpeg/FFmpeg/commit/9983d098ff0ee54bc3b77676dd885883bfbe4ffb ) (c182ca3c9) - nss: update certdata and bump ckbi version to 2.82 (db7a51891) - update timezone tld and ev root data (58e09f3c7) - icu-data: regenerate with icu_sources_data.py (868997718) - icu: import backport of ICU-20558 (Fix regression in DateTimePatternGenerator) (72c196bdb) - icu: if langTag is empty, point it to root.txt as well (23f410065)

New build of BOC/UXP for XP! Test binary: MailNews Win32 https://o.rthost.win/boc-uxp/mailnews.win32-20251206-40a79c75-uxp-e4afc5655b-xpmod.7z BNavigator Win32 https://o.rthost.win/boc-uxp/bnavigator.win32-20251206-40a79c75-uxp-e4afc5655b-xpmod.7z source repo (excluding UXP): https://github.com/roytam1/boc-uxp/tree/custom * Notice: the profile prefix (i.e. parent folder names) are also changed since 2020-08-15 build, you may rename their names before using new binaries when updating from builds before 2020-08-15. -- New build of HBL-UXP for XP! Test binary: IceDove-UXP(mail) https://o.rthost.win/hbl-uxp/icedove.win32-20251206-id-656ea98-uxp-e4afc5655b-xpmod.7z IceApe-UXP(suite) https://o.rthost.win/hbl-uxp/iceape.win32-20251206-id-656ea98-ia-c642e3c-uxp-e4afc5655b-xpmod.7z source repo (excluding UXP): https://github.com/roytam1/icedove-uxp/tree/winbuild https://github.com/roytam1/iceape-uxp/tree/winbuild

New build of Serpent/UXP for XP! Test binary: Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20251206-3219d2d-uxp-e4afc5655b-xpmod.7z Win64 https://o.rthost.win/basilisk/basilisk52-g4.8.win64-git-20251206-3219d2d-uxp-e4afc5655b-xpmod.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/custom IA32 Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20251206-3219d2d-uxp-e4afc5655b-xpmod-ia32.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/ia32 NM28XP build: Win32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20251206-d849524bd-uxp-e4afc5655b-xpmod.7z Win32 IA32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20251206-d849524bd-uxp-e4afc5655b-xpmod-ia32.7z Win32 SSE https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20251206-d849524bd-uxp-e4afc5655b-xpmod-sse.7z Win64 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20251206-d849524bd-uxp-e4afc5655b-xpmod.7z Win7+ x64 AVX2 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20251206-d849524bd-uxp-e4afc5655b-w7plus-avx2.7z Official UXP changes picked since my last build: - Issue #2489 - fix `color-mix` implementation. (103bd151c8) - Issue #2847 - Update tests and toolkit CSS to account for `windows-win11` (becf65d05a) - Issue #2869 - Make Purple Buffer additions check if cell is tenured. (34d1d5a650) No official Pale-Moon changes picked since my last build. No official Basilisk changes picked since my last build. My changes picked since my last build: - layout: restore xp theme names in test (c80b9fc1ea) - ffvpx: update ffmpeg to 3.4.14 ( https://github.com/FFmpeg/FFmpeg/commit/9983d098ff0ee54bc3b77676dd885883bfbe4ffb ) (83cd56dfbb) - nss: update certdata and bump ckbi version to 2.82 (d8a03301d4) - dns: update effective_tld_names.dat from https://publicsuffix.org/list/public_suffix_list.dat (e27800bb2a) - icu: update timezone data (cb88bccc0a) - security: update EV root data (c417312184) - icu: import backport of ICU-20558 (Fix regression in DateTimePatternGenerator) (dc67193fba) - icu: if langTag is empty, point it to root.txt as well (9e8e5fbd83) - icu-data: regenerate with icu_sources_data.py (e4afc5655b) Update Notice: - You may delete file named icudt*.dat inside program folder when updating from old releases. * Notice: From now on, UXP rev will point to `custom` branch of my UXP repo instead of MCP UXP repo, while "official UXP changes" shows only `tracking` branch changes.

if it happens in beginning then there is no clue how to fix it.

No offense but where's the Retrozilla 2.3 changes for Crescent-Vine,and also,where's the pull request you said you would merge?

I appreciate your work, so no offense. I downloaded your first version basilisk52-g4.1.win32-git-20180224-dc7ceccf8-xpmod it already has this defect. And to check it is enough even just to throw mp4 file on browser tab and change playback speed in player. While checking noticed that for example in basilisk52-g4.1.win32-git-20180224-dc7cececcf8 CPU load during normal playback is lower than for example basilisk52-g4.6.win32-git-20200725-4d76d4e-uxp-1e0bb1d35-xpmod. The difference is very small, 2-5%. In general I realized that you do not want to fix or can not, too bad.

And I wish other drivers to be edited https://forums.mydigitallife.net/threads/tool-xp2esd-create-modern-windows-xp-installer-v1-6-2.82935/page-134#post-1810919

Due to @George King abolished xp2esd 1.7 project,I tried to edit the driver by myself.I firstly tried TPM_6.1.7601.24564(tpm 2.0),I used winhex to edit ntoskrnl.exe to ntoskrn8.sys and edit Wdfldr.sys to wdfld8.sys in tpm.sys and tried on my xp vm.However it still missing some function in ntoskrn8.sys and failed to be installed in virtualbox vm.So could anyone to help me edit again? https://i.ibb.co/HTGc6Z6B/IMG-20251205-220839.jpg https://i.ibb.co/JFqVMftm/IMG-20251205-220809.jpg

... It would appear "someone" is reading this thread ; disregard above link (it now 404s), here's the new one: https://github.com/3dyd/pyinstaller-builds/releases/tag/latest (with previous releases (6.16.0) reinstated )

@Goodwin @roytam1 I'm not a professional, I just compile Mozilla based browsers for my personal use and hope for the best. For instance, I'm trying to compile Firefox 13+ with Windows 2000 compatibility. One thing that sometimes (but not always) causes runtime execution failure is clicking on tools -> options -> applications which can cause an error in MSVCR71.DLL. Also, after reverting the commit that broke Windows 2000 compatibility, I had a minor problem that is caused by opening a new tab, and the message displayed on the new tab page was relating to an invalid address. That annoyance was caused by the commit for Mozilla bug 728429, which mandated ASLR on Windows. In order to find that, I had to cherry-pick a range of commits between the one that broke Windows 2000 compatibility, and the one mandating ASLR, then compile the source code a few times to narrow down my search. The point is, if a problem does not exist in one of roytam1's browser builds, then exists on a later browser version, the right thing to do is find out what the last good version, and the first bad version is, then it would be easier to find when the problem started, and what commit caused it. Also, it is possible a bug might not affect everybody.