diff --git a/win/build-deps.cmd b/win/build-deps.cmd
index cb97869a06..8f1de0fc1b 100644
--- a/win/build-deps.cmd
+++ b/win/build-deps.cmd
@@ -442,7 +442,7 @@ exit /b %IFCOS_SCRIPT_RET%
 pushd "%2"
 if not exist "%~3". (
     call cecho.cmd 0 13 "Downloading %DEPENDENCY_NAME% into %~2."
-    powershell -Command "$webClient = new-object System.Net.WebClient; $webClient.DownloadFile('%1', '%3')"
+    powershell -Command "$webClient = new-object System.Net.WebClient; $webClient.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials; $webClient.DownloadFile('%1', '%3')"
     REM Old wget version in case someone has problem with PowerShell: wget --no-check-certificate %1
 ) else (
     call cecho.cmd 0 13 "%DEPENDENCY_NAME% already downloaded. Skipping."