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PTY Host Error when runing R code on MacOS #1654
Description
Does this issue occur when all extensions are disabled?: Both
VS Code Version: 1.106.3
OS Version: Mac OS Tahoe 26.1
Steps to Reproduce:
Ran R code in VS Code
Code failed to complete, generated error message: "The connection to the terminal's pty host process is unresponsive, terminals may stop working. Click to manually restart the pty host."
Especially with large chunks of R code (does not happen in Rstudio or R terminal)
Clicks to restart, re-runs code, error arises again, but i lost all of my environnement
Activity
guscastilloa commentedon Jan 7, 2026
I also have this issue. I ran 36 lines all at once and got the same error and it has been happening for a long while. Found this similar issue microsoft/vscode#239379 in the VSCode repo that addressed this same error.
thomashusson29 commentedon Jan 8, 2026
Maybe it can help you, but I haven't this bug in Positron or Cursor... I can execute > 1000 lines of code in one click but with VScode it happens with < 50 lines of code.
ThomasSoeiro commentedon Sep 22, 2026
@thomashusson29 or @guscastilloa Can you reproduce in a recent version of VSCode?
See also microsoft/vscode#252018
@eitsupi @Fred-Wu @grantmcdermott can you please add the "needs information" tag?
ThomasSoeiro commentedon Sep 26, 2026
@eitsupi @Fred-Wu @grantmcdermott Does any of you have a Mac to try to reproduce this issue?