diff --git a/cli/src/main/java/com/devonfw/tools/ide/tool/IdeasyCommandlet.java b/cli/src/main/java/com/devonfw/tools/ide/tool/IdeasyCommandlet.java
index 2405ad193b..c4a3788199 100644
--- a/cli/src/main/java/com/devonfw/tools/ide/tool/IdeasyCommandlet.java
+++ b/cli/src/main/java/com/devonfw/tools/ide/tool/IdeasyCommandlet.java
@@ -615,7 +615,13 @@ private void deleteDownloadCache() {
 
   private void uninstallIdeasyIdePath(Path idePath) {
     if (this.context.getSystemInfo().isWindows()) {
-      this.context.newProcess().executable("bash").addArgs("-c",
+      Path bash = this.context.findBash();
+      if (bash == null) {
+        LOG.warn("Could not find bash for asynchronous deletion of {}. Falling back to direct deletion.", idePath);
+        this.context.getFileAccess().delete(idePath);
+        return;
+      }
+      this.context.newProcess().executable(bash).addArgs("-c",
           "sleep 10 && rm -rf \"" + WindowsPathSyntax.MSYS.format(idePath) + "\"").run(ProcessMode.BACKGROUND);
       IdeLogLevel.INTERACTION.log(LOG,
           "To prevent windows file locking errors, we perform an asynchronous deletion of {} in background now.\n"
diff --git a/windows-installer/Package.wxs b/windows-installer/Package.wxs
index de44aef08e..14d72a7d37 100644
--- a/windows-installer/Package.wxs
+++ b/windows-installer/Package.wxs
@@ -12,7 +12,7 @@
 			<Files Include="msi-files\**" />
       <Component Id="setEnv" Directory="INSTALLFOLDER" Guid="8bea8575-87ca-4847-8b8b-202b6e34901e">
         <CreateFolder/>
-        <Environment Id="IdeRoot" Name="IDE_ROOT" Value="[IDE_ROOT]" Permanent="yes" Action="set" System="no" />
+        <Environment Id="IdeRoot" Name="IDE_ROOT" Value="[IDE_ROOT]" Permanent="no" Action="set" System="no" />
       </Component>
 		</Feature>
 
@@ -51,7 +51,7 @@
     <!-- Execution of uninstall command-->
     <SetProperty
       Id="RunUninstallAction"
-			Value='"[%SystemFolder]cmd.exe" /c "[%IDE_ROOT]\_ide\installation\bin\ideasy.exe -ft --no-colors uninstall > [%IDE_ROOT]\uninstall.log 2>&amp;1"'
+      Value='"[%SystemFolder]cmd.exe" /v:on /c "cd /d &quot;[INSTALLFOLDER]&quot; &amp;&amp; (if not exist &quot;[%USERPROFILE]\.ide\logs&quot; mkdir &quot;[%USERPROFILE]\.ide\logs&quot;) &amp;&amp; set ts=%date:/=-%_%time::=-% &amp;&amp; set ts=!ts:,=-! &amp;&amp; bin\ideasy.exe -ft --no-colors uninstall &gt; &quot;[%USERPROFILE]\.ide\logs\uninstall-!ts!.log&quot; 2&gt;&amp;1"'
       Before="RunUninstallAction"
       Sequence="execute"
       />