Here's the generated backtrace after doing M-x toggle-debug-on-error and then trying to do export on Windows.

Debugger entered--Lisp error: (rng-uri-error "Bad escapes in URI ‘file:///c:/Program%20Files/Ema...")
  signal(rng-uri-error ("Bad escapes in URI ‘file:///c:/Program%20Files/Ema..."))
  rng-uri-error("Bad escapes in URI `%s'" "file:///c:/Program%20Files/Emacs/x86_64/share/emac...")
  rng-uri-file-name-1("file:///c:/Program%20Files/Emacs/x86_64/share/emac..." nil)
  rng-uri-file-name("file:///c:/Program%20Files/Emacs/x86_64/share/emac...")
  rng-locate-schema-file()
  rng-auto-set-schema(t)
  rng-validate-mode(1)
  rng-nxml-mode-init()
  xml-mode()
  set-auto-mode-0(xml-mode nil)
  set-auto-mode()
  normal-mode(t)
  after-find-file(nil nil)
  find-file-noselect-1(#<buffer styles.xml> "c:/Users/donni/AppData/Local/Temp/odt-s6F4yN/style..." t nil "c:/Users/donni/AppData/Local/Temp/odt-s6F4yN/style..." (6755399441121385 3391104951))
  find-file-noselect("c:/Users/donni/AppData/Local/Temp/odt-s6F4yN/style..." t)
  org-odt-template(#("\n\n<text:h text:style-name=..." 186 203 (:parent (headline ... ...)) 304 509 (:parent (paragraph ... ...)) 704 714 (:parent (headline ... ...)) 815 987 (:parent (paragraph ... ...)) 995 1044 (:parent (paragraph ... ...)) 1052 1083 (:parent (paragraph ... ...)) 1278 1289 (:parent (headline ... ...)) 1390 1489 (:parent (paragraph ... ...)) ...) (:export-options nil :back-end #s(org-export-backend :name odt :parent nil :transcoders (... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...) :options (... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...) :filters (...) :blocks nil :menu (111 "Export to ODT" ...)) :translate-alist ((bold . org-odt-bold) (center-block . org-odt-center-block) (clock . org-odt-clock) (code . org-odt-code) (drawer . org-odt-drawer) (dynamic-block . org-odt-dynamic-block) (entity . org-odt-entity) (example-block . org-odt-example-block) (export-block . org-odt-export-block) (export-snippet . org-odt-export-snippet) (fixed-width . org-odt-fixed-width) (footnote-definition . org-odt-footnote-definition) (footnote-reference . org-odt-footnote-reference) (headline . org-odt-headline) (horizontal-rule . org-odt-horizontal-rule) (inline-src-block . org-odt-inline-src-block) (inlinetask . org-odt-inlinetask) (italic . org-odt-italic) (item . org-odt-item) (keyword . org-odt-keyword) (latex-environment . org-odt-latex-environment) (latex-fragment . org-odt-latex-fragment) (line-break . org-odt-line-break) (link . org-odt-link) (node-property . org-odt-node-property) (paragraph . org-odt-paragraph) ...) :exported-data #<hash-table eq 34/4001 0x26f5845> :input-buffer "belvoire.org" :input-file "c:/Users/donni/OneDrive/Do..." :odt-styles-file nil :description nil :keywords nil :subtitle nil :odt-content-template-file nil :odt-display-outline-level 2 :odt-fontify-srcblocks t ...))
  org-export-as(odt nil nil nil nil)
  org-odt-export-to-odt(nil nil nil nil)
  org-export-dispatch(nil)
  funcall-interactively(org-export-dispatch nil)
  call-interactively(org-export-dispatch nil nil)
  command-execute(org-export-dispatch)

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On Jun 26 2021, at 11:05 pm, Tim Cross <theophilusx@gmail.com> wrote:

Brandon Taylor <donnie126_2002@hotmail.com> writes:

> Okay. Well, I've gone ahead and installed LibreOffice, which took care of the "missing 'soffice'" problem, but like a frustrating game of Whac-A-Mole,
> another problem popped up. Now I'm left high and dry as to what might have happened, because after adding the location of soffice.exe in my
> Windows PATH environment variable, I get the following output:
>
> Executing soffice --headless --convert-to odt --outdir "c:/Users/donni/OneDrive/Documents/" "c:/Users/donni/OneDrive/Documents/belvoire.odt"
>
> Export to c:/Users/donni/OneDrive/Documents/belvoire.odt failed
>
> with absolutely no rhyme or reason as to what went wrong.
>

You can try turning on debug on error with

M-x toggle-debug-on-error

which might give you a backtrace that will provide more details.

I would also try executing the command

soffice --headless --convert-to odt --outdir "c:/Users/donni/OneDrive/Documents/" "c:/Users/donni/OneDrive/Documents/belvoire.odt"

at a command prompt and see if you get any additonal information. I've
not done odt exports of org files, but that command line looks odd to me
- it looks like it is trying to convert an odt file to odt?

I suspect you will have a hard time getting all this to work on Windows.
It is possible, but as Windows is not a 'preferred' platform, you have a
significant amount of configuration/customisation to do to get it
working.

I never use Windows, so cannot provide much help of any real substance.
I do wonder if it might be easier if you use WSL?

--
Tim Cross
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