概要

Windows環境にてTeX Live 2025から2026へのアップデートを実施したときの手順

詳細

インストーラー install-tl-windows.exe を用いてTeX Live 2026をインストールする
- アップグレードの説明には There is no comparable upgrade procedure for Windows. Doing a new installation is necessary. とある
- install-tl-windows.exe はインストール手順などからダウンロードできる
- 原因は不明だが，今年はパッケージのインストールエラーが多発した (補遺参照)
(任意) tlgpgをインストールする
- コマンドプロンプトで tlmgr --repository http://www.texlive.info/tlgpg/ install tlgpg を実行する
既定のアプリを変更する
- .texの既定値を2026のTeXworksに変更する
2025のTeXworksの設定を引き継ぐ
- %USERPROFILE%\.texlive2026\texmf-config\texworks\configuration\tools.ini
  - %USERPROFILE%\.texlive2025\texmf-config\texworks\configuration\tools.ini をファイルごと上書きする
- %USERPROFILE%\.texlive2026\texmf-config\texworks\TUG\TeXworks.ini
  - defaultEngineを普段自分が使っているものに変更する
動作確認を行う
- TeXworksで適当なTeXファイルをタイプセットできることを確認する
TeX Live 2025をアンインストールする
- C:\texlive\2025\tlpkg\installer\uninst.bat を管理者として実行
  - このバッチファイルは %APPDATA%\Microsoft\Windows\Start Menu\Programs\TeX Live 2025\Uninstall TeX Live.lnk の実体である
- 進捗状況が表示されないので不安になるが，C:\texlive\2025 が無くなればアンインストール完了
%USERPROFILE%\.texlive2025 を削除する
(任意・上級者向け) 不要なレジストリを削除する
- 例
  - HKEY_CURRENT_USER\Software\Classes\TL.DVIOUT.view.2025
  - HKEY_CURRENT_USER\Software\Classes\TL.PSViewer.view.2025
  - HKEY_CURRENT_USER\Software\Classes\TL.TeXworks.edit.2025

TeX Live 2025から2026へのパッケージの引き継ぎは実施していない

補遺

TeX Live 2026のインストール後に以下のメッセージが表示されたため，コマンドプロンプトで tlmgr update --all --reinstall-forcibly-removed を実行した

*** PLEASE READ THIS WARNING ***********************************

The following (inessential) packages failed to install properly:

  textmerg textopo textpath textpos textualicomma texvc texware texware.windows texworks texworks.windows tfrupee thaienum thaispec thalie theanodidot theanomodern theanooldstyle theatre thematicpuzzle theoremref thermodynamics thesis-ekf thesis-gwu thesis-qom thesis-titlepage-fhac thinsp thmbox thmtools threadcol threeddice threeparttable threeparttablex thuaslogos thubeamer thucoursework thumb thumbpdf thumbpdf.windows thumbs thumby thuthesis ticket ticollege tictactoe tidyres tie tie.windows tiet-question-paper tikz-3dplot tikz-among-us tikz-bagua tikz-bayesnet tikz-bbox tikz-bpmn tikz-cd tikz-cookingsymbols tikz-decofonts tikz-dependency tikz-dimline tikz-ext tikz-feynhand tikz-feynman tikz-imagelabels tikz-inet tikz-kalender tikz-karnaugh tikz-ladder tikz-lake-fig tikz-layers tikz-mirror-lens tikz-nef tikz-network tikz-nfold tikz-opm tikz-optics tikz-osci tikz-page tikz-palattice tikz-planets tikz-qtree tikz-relay tikz-sfc tikz-shields tikz-swigs tikz-timing tikz-trackschematic tikz-triminos tikz-truchet tikz2d-fr tikz3d-fr tikzbrickfigurines tikzbricks tikzcalendarnotes tikzcodeblocks tikzdotncross tikzducks tikzfill tikzfxgraph tikzinclude tikzlings tikzmark tikzmarmots tikzorbital tikzpackets tikzpagenodes tikzpeople tikzpfeile tikzpingus tikzposter tikzquads tikzquests tikzscale tikzsymbols tikztosvg tikzviolinplots tile-graphic tilings timbreicmc timechart timeop times timetable timing-diagrams tinos tipa tipa-de tipauni tipfr tiscreen titlecaps titlefoot titlepages titlepic titleref titlesec titling tkz-base tkz-berge tkz-bernoulli tkz-doc tkz-elements tkz-euclide tkz-fct tkz-graph tkz-grapheur tkz-interval tkz-orm tkz-tab tkzexample tlc-article tlc2 tlc3-examples tlcockpit tlcockpit.windows tlgs.windows tlmgr-intro-zh-cn tlmgrbasics tlshell tlshell.windows to-be-determined tocbibind tocdata tocloft tocvsec2 todo todonotes tokcycle tokenizer tokglobalstack tokgroupmark tokmap tonevalue toolbox tools topfloat topiclongtable topletter toptesi totalcount totcount totpages tpic2pdftex tpslifonts tqft tracklang traffic-light-protocol trajan tram tramlines translation-array-fr translation-arsclassica-de translation-biblatex-de translation-chemsym-de translation-dcolumn-fr translation-ecv-de translation-enumitem-de translation-europecv-de translation-filecontents-de translation-moreverb-de translation-natbib-fr translation-tabbing-fr translations translator transparent transparent-io tree-dvips treesvr treetex trfsigns trigonometry trimspaces trivfloat trivialpursuit trsym truncate truthtable tsemlines tsvtemplate ttfutils ttfutils.windows tucv tuda-ci tudscr tufte-latex tugboat tugboat-plain tui tuple turabian turabian-formatting turkmen turnstile turnthepage tutodoc tuzuk twemoji-colr twemojis twoinone twoup twoxtwogame txfonts txfontsb txgreeks txuprcal type1cm typed-checklist typeface typehtml typeoutfileinfo typewriter typicons typoaid typog typog.windows typogrid typstfun tzplot uaclasses uafthesis ualberta uantwerpendocs uassign ucalgmthesis ucbthesis ucdavisthesis ucharcat ucharclasses ucph-revy ucs ucsmonograph ucthesis udepcolor udes-genie-these udesoftec udiss uebungsblatt uestcthesis ufrgscca uhc uhhassignment uhrzeit uiucredborder uiucthesis ukbill ukrhyph ulem ullrcorners ulqda ulqda.windows ulthese umbclegislation umich-thesis uml umlaute umoline umthesis umtypewriter unam-thesis unamth-template unamthesis unbtex undar-digitacion undergradmath underlin underoverlap underscore undolabl unfonts-core unfonts-extra uni-titlepage uni-wtal-ger uni-wtal-lin unibidi-lua unicode-alphabets unicode-bidi unicode-data unicode-math unicode-math-input unicodefonttable unifith unifront unigrazpub unimath-plain-xetex uninormalize uniquecounter unisc unisugar unitconv unitn-bimrep units unitsdef universa universalis univie-ling unizgklasa unravel unswcover uol-physics-report uothesis uowthesis uowthesistitlepage upca updatemarks uplatex uplatex.windows upmendex upmendex.windows upmethodology uppunctlm upquote uptex uptex-base uptex-fonts uptex.windows upzhkinsoku urcls uri url urlbst urlbst.windows urwchancal usebib useclass ushort uspace uspatent ut-thesis utexasthesis utf8add utf8mex utfsym utopia uvaletter uwa-colours uwa-letterhead uwa-pcf uwa-pif uwmslide uwthesis vak vancouver variablelm variations varindex varisize varsfromjobname varwidth vaucanson-g vcell vdmlisting vectorlogos velthuis velthuis.windows venn venndiagram venturisadf verbasef verbatimbox verbatimcopy verbdef verbments verifica verifiche verifycommand verse version versions versonotes vertbars vexillology vgrid vhistory visualfaq visualfaq-fr visualpstricks visualtikz visualtoks vlna vlna.windows vmargin vntex vocaltract volumes voss-mathcol vpe vpe.windows vruler vscodeicons vtable vwcol wadalab wallcalendar wallpaper wargame warning warpcol was wasy wasy-type1 wasysym web web.windows webguide webquiz webquiz.windows weiqi whatsnote wheelchart widetable widows-and-orphans williams willowtreebook windycity wintools.windows withargs witharrows wnri wnri-latex wordcloud wordcount wordle wordlike worksheet worldflags wrapfig wrapfig2 wrapstuff wrapstuff-doc-en writeongrid wsemclassic wsuipa wtref xargs xassoccnt xbmks xcharter xcharter-math xcite xcjk2uni xcntperchap xcolor xcolor-material xcolor-solarized xcomment xcookybooky xcpdftips xdoc xduthesis xduts xdvi xdvipsk xdvipsk-support xdvipsk.windows xebaposter xechangebar xecjk xecolor xecyr xecyrmongolian xeindex xelatex-dev xelatex-dev.windows xellipsis xepersian xepersian-hm xesearch xespotcolor xetex xetex-devanagari xetex-itrans xetex-pstricks xetex-tibetan xetex.windows xetexconfig xetexfontinfo xetexko xetexref xevlna xfakebold xfor xfrac xgreek xhfill xifthen xii xii-lat ximera xindex xindex.windows xindy xindy-persian xindy.windows xint xint-regression xintsession xistercian xits xkcdcolors xkeymask xkeyval xlop xltabular xltxtra xmeaning xml2pmx xml2pmx.windows xmltex xmltex.windows xmpincl xmuthesis xnewcommand xoptarg xpatch xpdfopen xpdfopen.windows xpeek xpeekahead xpiano xpicture xpinyin xprintlen xpunctuate xq xreview xsavebox xsim xsipa xskak xstacks xstix2 xstring xtab xtufte xtuthesis xunicode xurl xwatermark xyling xymtex xypic xypic-tut-pt xytree yafoot yagusylo yaletter yamlvars yannisgr yathesis yax yazd-thesis yb-book ycbook ydoc yet-another-guide-latex2e yfonts yfonts-otf yfonts-t1 yhmath yinit-otf york-thesis youngtab yplan yplan.windows yquant ysabeau ytableau zapfchan zapfding zbmath-review-template zebra-goodies zeckendorf zed-csp zennote zhlineskip zhlipsum zhmetrics zhmetrics-uptex zhnumber zhspacing ziffer zitie zlmtt zootaxa-bst zref zref-check zref-clever zref-vario zugferd zwgetfdate zwpagelayout zx-calculus zxjafbfont zxjafont zxjatype zztex

You can fix this by running this command:
  tlmgr update --all --reinstall-forcibly-removed
to complete the installation.

However, if the problem was a failure to download (by far the
most common cause), check that you can connect to the chosen mirror
in a browser; you may need to specify a mirror explicitly.
******************************************************************

参考

Upgrade - TeX Live - TeX Users Group
Quick install - TeX Live - TeX Users Group
tlgpg - GnuPG packages in a TeX Live repository - texlive.info