diff --git a/platform/platform-impl/src/com/intellij/execution/wsl/WSLUtil.java b/platform/platform-impl/src/com/intellij/execution/wsl/WSLUtil.java
index 8100c2aa7441..940f5f639f53 100644
--- a/platform/platform-impl/src/com/intellij/execution/wsl/WSLUtil.java
+++ b/platform/platform-impl/src/com/intellij/execution/wsl/WSLUtil.java
@@ -69,7 +69,7 @@ public final class WSLUtil {
    * @return root for WSL executable or null if unavailable
    */
   private static @Nullable Path getExecutableRootPath() {
-    String localAppDataPath = System.getenv().get("LOCALAPPDATA");
+    String localAppDataPath = System.getenv("LOCALAPPDATA");
     return StringUtil.isEmpty(localAppDataPath) ? null : Paths.get(localAppDataPath, "Microsoft\\WindowsApps");
   }
 
diff --git a/platform/warmup/src/com/intellij/warmup/ProjectCachesWarmup.kt b/platform/warmup/src/com/intellij/warmup/ProjectCachesWarmup.kt
index c48b326e8118..6fdf35e9d322 100644
--- a/platform/warmup/src/com/intellij/warmup/ProjectCachesWarmup.kt
+++ b/platform/warmup/src/com/intellij/warmup/ProjectCachesWarmup.kt
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.warmup
 
 import com.intellij.ide.environment.impl.EnvironmentUtil
@@ -217,7 +217,7 @@ private fun parseCommandLineArguments(args: List<String>): WarmupProjectArgs {
 
 private suspend fun buildProject(project: Project, commandArgs: WarmupProjectArgs) {
   val buildMode = getBuildMode(commandArgs)
-  val builders = System.getenv()["IJ_WARMUP_BUILD_BUILDERS"]?.split(";")?.toHashSet()
+  val builders = System.getenv("IJ_WARMUP_BUILD_BUILDERS")?.split(";")?.toHashSet()
   if (buildMode != null) {
     waitForBuilders(project, buildMode, builders)
   }
@@ -259,4 +259,3 @@ private suspend fun exitApplication() {
     ApplicationManager.getApplication().exit(false, true, false)
   }
 }
-
diff --git a/plugins/ide-startup/importSettings/src/com/intellij/ide/startup/importSettings/transfer/backend/db/WindowsEnvVariables.kt b/plugins/ide-startup/importSettings/src/com/intellij/ide/startup/importSettings/transfer/backend/db/WindowsEnvVariables.kt
index 061f524e0bc4..dc15068fbca5 100644
--- a/plugins/ide-startup/importSettings/src/com/intellij/ide/startup/importSettings/transfer/backend/db/WindowsEnvVariables.kt
+++ b/plugins/ide-startup/importSettings/src/com/intellij/ide/startup/importSettings/transfer/backend/db/WindowsEnvVariables.kt
@@ -1,23 +1,17 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.ide.startup.importSettings.db
 
 import com.intellij.ide.startup.importSettings.providers.vswin.utilities.RunConfigurationEnvironmentUtils
-import java.util.*
+import com.intellij.util.EnvironmentUtil
 
 object WindowsEnvVariables {
   /*
- * Some widely used env vars.
- */
-  val applicationData: String = get("APPDATA").toString()
-  val localApplicationData: String = get("LOCALAPPDATA").toString()
-  val userProfile: String = get("USERPROFILE").toString()
-
-  /**
-   * Function to get one Windows env var.
-   *
-   * Use without %%. Example: get("APPDATA")
+   * Some widely used env vars.
    */
-  fun get(variable: String): String? = System.getenv()[variable] ?: System.getenv()[variable.uppercase(Locale.getDefault())]
+  val applicationData: String = EnvironmentUtil.getValue("APPDATA").toString()
+  val localApplicationData: String = EnvironmentUtil.getValue("LOCALAPPDATA").toString()
+  val userProfile: String = EnvironmentUtil.getValue("USERPROFILE").toString()
 
-  fun expandPath(path: String): String? = RunConfigurationEnvironmentUtils.expandVariables("%", "%", path, WindowsEnvVariables::get, false, null)
-}
\ No newline at end of file
+  fun expandPath(path: String): String? =
+    RunConfigurationEnvironmentUtils.expandVariables("%", "%", path, EnvironmentUtil::getValue, false, null)
+}
diff --git a/python/build/build-debug-binaries/src/build.gradle b/python/build/build-debug-binaries/src/build.gradle
index 6e8c7f7771ac..5122a27ad03f 100644
--- a/python/build/build-debug-binaries/src/build.gradle
+++ b/python/build/build-debug-binaries/src/build.gradle
@@ -26,7 +26,7 @@ envs {
   String python312version = "3.12.0"
   String python313version = "3.13.0"
 
-  def customBuildDir = System.getenv().get("PYCHARM_BUILD_DIR")
+  def customBuildDir = System.getenv("PYCHARM_BUILD_DIR")
   project.buildDir = customBuildDir? new File(customBuildDir): buildDir
   bootstrapDirectory = new File(buildDir, 'pythons')
   envsDirectory = new File(buildDir, 'envs')
diff --git a/python/python-psi-impl/src/com/jetbrains/python/psi/PyUtil.java b/python/python-psi-impl/src/com/jetbrains/python/psi/PyUtil.java
index 3924373d8eee..13389249c405 100644
--- a/python/python-psi-impl/src/com/jetbrains/python/psi/PyUtil.java
+++ b/python/python-psi-impl/src/com/jetbrains/python/psi/PyUtil.java
@@ -73,7 +73,7 @@ import static com.jetbrains.python.ast.PyAstFunction.Modifier.STATICMETHOD;
  */
 public final class PyUtil {
 
-  private static final boolean VERBOSE_MODE = System.getenv().get("_PYCHARM_VERBOSE_MODE") != null;
+  private static final boolean VERBOSE_MODE = System.getenv("_PYCHARM_VERBOSE_MODE") != null;
 
   private PyUtil() {
   }
diff --git a/python/tools/setup-conda-envs/build.gradle b/python/tools/setup-conda-envs/build.gradle
index ae683a295751..5559e1fad836 100644
--- a/python/tools/setup-conda-envs/build.gradle
+++ b/python/tools/setup-conda-envs/build.gradle
@@ -12,7 +12,7 @@ envs {
   envsDirectory = new File(System.getenv().getOrDefault("PYCHARM_PYTHON_VIRTUAL_ENVS", new File(buildDir, 'envs').path))
 
   if (System.getenv().containsKey("PYCHARM_ZIP_REPOSITORY")) {
-    zipRepository = new URL(System.getenv().get("PYCHARM_ZIP_REPOSITORY"))
+    zipRepository = new URL(System.getenv("PYCHARM_ZIP_REPOSITORY"))
     shouldUseZipsFromRepository = Os.isFamily(Os.FAMILY_WINDOWS)
   }
 
diff --git a/python/tools/setup-envs/build.gradle b/python/tools/setup-envs/build.gradle
index 587f39891e7b..4ffe0cebb443 100644
--- a/python/tools/setup-envs/build.gradle
+++ b/python/tools/setup-envs/build.gradle
@@ -26,7 +26,7 @@ envs {
   envsDirectory = new File(System.getenv().getOrDefault("PYCHARM_PYTHON_VIRTUAL_ENVS", new File(buildDir, 'envs').path))
 
   if (System.getenv().containsKey("PYCHARM_ZIP_REPOSITORY")) {
-    zipRepository = new URL(System.getenv().get("PYCHARM_ZIP_REPOSITORY"))
+    zipRepository = new URL(System.getenv("PYCHARM_ZIP_REPOSITORY"))
     shouldUseZipsFromRepository = Os.isFamily(Os.FAMILY_WINDOWS)
   }