Session option posit-assistant-installation-enabled and env var RSTUDIO_DISABLE_POSIT_ASSISTANT_INSTALLATION: block users from installing/updating/uninstalling Posit Assistant; RStudio uses only the admin install with no update checks.
Session option posit-assistant-path: point RStudio at an admin-managed Assistant install outside the system config directory.
“Posit AI service” renamed “Posit AI Pass” in the UI.
Queries Package Manager for supported Linux distros, extending binary R package installs beyond the built-in list (falls back if unreachable).
Posit Assistant for RStudio bundled with Workbench (works air-gapped).
New profile settings: assistant-installation-enabled, assistant-settings-enforced/-default, ai-providers-default (alongside existing ai-providers-enforced, which now also covers RStudio Pro).
native-oauth option for Azure Databricks workspaces in databricks.conf.
Available Credentials view (VS Code/Positron Pro) supports Databricks and Snowflake advanced integrations, incl. Snowflake role switching.
Positron Pro logs record version as single-line JSON.
Environment inspection tool enumerates installed R/Python packages per library.
Launcher: Kubernetes plugin supports AWS ECR image registries; Slurm plugin skips jobs without the [RStudio Launcher] prefix.
Fixed — RStudio (highlights)
Default CRAN repo on Ubuntu resolute / Debian trixie now uses Posit Public Package Manager (no more source builds).
Visual editor: Find seeds with selection (incl. inside chunks); Find and Add Next / Find All now work; fixed a null-property error after Reload Now.
Data Viewer: last row no longer hidden by scrollbar; faster search/filter/scroll/Summary; search refines rather than rescans; memory leak fixed.
Windows: locale drift corrupting non-ASCII Console input; env var changes visible to R; untrusted dirs no longer read user .Renviron; high-contrast dark theme checkboxes; spurious crash reports on session close.
Posit Assistant: install prompt decline restores prior assistant; honors system-wide installs; clearer DNS/proxy/TLS and download errors; no stuck “update in progress” after R restart.
Debugging: S7 method breakpoints (incl. pre-R 4.3.0 and package-scoped classes).
RStudio Server: no duplicate orphaned sessions on relaunch; no spurious “Error Listing Objects”; localhost proxy streams responses and restricts to requested IP family; sign-in page backs off polling when hidden.
Editor: stale Markdown/YAML highlighting; raw strings breaking folds; #-decorated section header folding; C++ chunk indentation and Quarto #| formatting; rainbow fenced-div nesting; Expand All after Collapse All in R Markdown; snippet errors across language modes; math-preview Escape leak.
Misc: pane zoom/layout state; console line navigation on wrapped commands; Plots pane activation after busy commands; popped-out window focus; macOS file-monitor overload; slow remote user/group lookups on Linux; What’s New shown once per release; crash reporting/thread safety at startup.
Fixed — Posit Workbench (highlights)
Blank RS_SERVER_URL in RStudio Pro sessions.
Subprocess status messages mislogged as ERROR.
Homepage “Last-used” image tag now updates and is tracked per workbench.
extensions.autoUpdate default type for VS Code/Positron sessions.
Environment inspection: finds R with no search paths configured; correct package names and library paths with spaces in audited job summaries.
Non-RFC 1341 HTTP POST parsing.
Launcher: stuck plugin restarts no longer freeze other clusters; heartbeat race causing spurious restarts; hung Kubernetes requests no longer exhaust queue slots; clearer errors for missing Slurm CLI and rsandbox validation failures; unparsable third-party Kubernetes Jobs logged as warnings.
Deprecated
RPubs and ShinyApps.io publishing destinations marked deprecated ahead of sunset.
RStudio 2026.09.0+174 "Autumn Hawkbit" Release (870df5ed7859c758db7aed6f510a3edca3c74bd7, 2026-09-06) for Ubuntu Jammy
Mozilla/5.0 (X11; Linux x86_64; rv:156.0) Gecko/20100101 Firefox/156.0, Quarto 1.10.18 (/usr/lib/rstudio-server/bin/quarto/bin/quarto)
/root 