### Bug description

My project is in a Dropbox folder. When I have more than one .qmd file and use the quarto book (though I suspect the issue would persist for any quarto project), the rendering process is incredibly unstable. The intermediate files that appear (e.g. `..\site_libs\bootstrap\`) seem to induce conflicts of the type: "The process cannot access the file because it is being used by another process.". They cite `os error 32` and `os error 145` as the issue. The issue has subsided now that I am using a local folder, not Dropbox. I would imagine any web syncable folder (e.g. OneDrive, GoogleDrive, etc) would present this issue. Hopefully someone is able to fix this, as I am sure this poses an issue to a lot of teams' workflow. 

Background Info: 
R 4.2.2
Windows 11 Pro 22H2

RStudio Info:
2022.12.0 Build 353
© 2009-2022 Posit Software, PBC
"Elsbeth Geranium" Release (7d165dcf, 2022-12-03) for Windows
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) RStudio/2022.12.0+353 Chrome/102.0.5005.167 Electron/19.1.3 Safari/537.36



### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [X] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
cderv
2023-03-07T14:23:47Z
Thiago-Alckmin
bug windows file-systems triaged-to
v1.4
open
OS ERROR 32 & OS ERROR 145 when using Quarto on a Dropbox directory. SOLUTION: Use local folder. 
https://github.com/quarto-dev/quarto-cli/issues/4670