diff --git a/eng/helix/content/runtests.cmd b/eng/helix/content/runtests.cmd
index 3aab373c69c9e472cce0115388a2c502323ddad3..a3c6de9c0a450d4309e8a30d723240f8ae18cb3f 100644
--- a/eng/helix/content/runtests.cmd
+++ b/eng/helix/content/runtests.cmd
@@ -18,6 +18,9 @@ set InstallPlaywright=%$installPlaywright%
 set PLAYWRIGHT_BROWSERS_PATH=%CD%\ms-playwright
 set PLAYWRIGHT_DRIVER_PATH=%CD%\.playwright\win-x64\native\playwright.cmd
 
+REM Avoid https://github.com/dotnet/aspnetcore/issues/41937 in current session.
+set ASPNETCORE_ENVIRONMENT=
+
 set "PATH=%HELIX_WORKITEM_ROOT%;%PATH%;%HELIX_WORKITEM_ROOT%\node\bin"
 echo Set path to: "%PATH%"
 echo.
diff --git a/eng/helix/content/runtests.sh b/eng/helix/content/runtests.sh
index d900837b94ba5e4c076036f97c16b3fd7dc89daf..286b9abfe9986e60c6e5540d95fd5109ca2c678d 100644
--- a/eng/helix/content/runtests.sh
+++ b/eng/helix/content/runtests.sh
@@ -13,6 +13,9 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 export DOTNET_MULTILEVEL_LOOKUP=0
 export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
 
+# Avoid https://github.com/dotnet/aspnetcore/issues/41937 in current session.
+unset ASPNETCORE_ENVIRONMENT
+
 export PATH="$PATH:$DIR:$DIR/node/bin"
 
 # Set playwright stuff