diff --git a/macos/build/build b/macos/build/build
index b417964..bba13fd 100755
--- a/macos/build/build
+++ b/macos/build/build
@@ -13,7 +13,7 @@ cd $dir
 arch=$(uname -m)
 language=$(osascript -e 'user locale of (get system info)' | sed -e 's/_/-/g')
 version="115.20.0esr"
-i2pdversion="2.56.0"
+i2pdversion="2.59.0"
 
 ftpmirror="https://ftp.mozilla.org/pub/firefox/releases/${version}"
 
diff --git a/windows/StartI2PdBrowser.bat b/windows/StartI2PdBrowser.bat
index abd3c4a..4471252 100644
--- a/windows/StartI2PdBrowser.bat
+++ b/windows/StartI2PdBrowser.bat
@@ -1,18 +1,28 @@
 @ECHO OFF
-REM Copyright (c) 2013-2019, The PurpleI2P Project
+REM Copyright (c) 2013-2026, The PurpleI2P Project
 REM This file is part of Purple i2pd project and licensed under BSD3
 REM See full license text in LICENSE file at top of project tree
 
 title Starting I2Pd Browser
+setlocal enableextensions
+
 set $pause=ping.exe 0.0.0.0 -n
-set $cd=%CD%
 ver| find "6." >nul && set $pause=timeout.exe /t
-
+ver| find "10.">nul && set $pause=timeout.exe /t
+set $cd=%~dp0
+set CURL=%~dp0build\curl.exe
 set fire=firefox.exe
 set port=FirefoxPortable.exe
 set i2pd=i2pd.exe
 
-if not exist Firefox ( echo Firefox not found... Start building... && pushd build && call build.cmd --skipwait & popd )
+:building
+cd /d "%$cd%"
+call :check_requirements || (
+	echo Start building...
+	pushd build
+	call build.cmd --skipwait
+	popd
+)
 
 taskList|find /i "%port%">nul&&(taskkill /im "%port%" /t>nul)&&(%$pause% 2 >nul)
 REM taskList|find /i "%fire%">nul&&(taskkill /im "%fire%" >nul)
@@ -22,10 +32,30 @@ taskList|find /i "%i2pd%">nul&&(goto runfox)||(goto starti2p)
 cd i2pd
 start "" "%i2pd%"
 
-echo i2pd Browser starting
+echo i2pd Router starting
 echo Please wait
 echo -------------------------------------
-for /L %%B in (0,1,35) do (call :EchoWithoutCrLf "." && %$pause% 2 >nul)
+set watchdog=0
+:wait_i2pd
+rem Checking for code 200 HTTP/OK
+"%CURL%" -s -x http://127.0.0.1:4444 -w "%%{http_code}\n" -o nul http://i2pd.i2p/ | find "200" || (
+	if not exist i2pd.exe (
+		if "%locale%"=="ru" (
+			echo Пожалуйста, нажмите ДА в окнах UAC чтобы добавить i2pd в иключения Защитника Windows
+		) else (
+			echo Please, press YES in UAC windows to add i2pd in Windows Defender exclusion
+		)
+		call :ADD_DEFENDER_EXCLUSION "%~dp0i2pd\i2pd.exe"
+		call :WARN_ANTIVIRUS
+		%$pause% 5
+		rem We need download i2pd again
+		goto building
+	)
+	call :EchoWithoutCrLf "." && %$pause% 1 >nul
+	set /a watchdog+=1
+	rem Maximum 5 minutes wait time
+	if %watchdog% lss 300 goto wait_i2pd
+)
 echo .
 echo -------------------------------------
 echo Welcome to I2P Network
@@ -35,18 +65,33 @@ cd %$cd%
 cd Firefox
 start "" "%port%"
 cd %$cd%
+%$pause% 5
+exit /b 0
+
+:check_requirements
+	if not exist Firefox ( echo Firefox not found... && exit /b 1 )
+	if not exist i2pd\i2pd.exe ( echo i2pd not found... && exit /b 1 )
 exit /b 0
 
+rem Предупреждает о возможном вмешательстве антивируса
+rem Предлагает его отключить, открыв окно настроек Windows Defender
+:WARN_ANTIVIRUS
+if "%locale%"=="ru" (
+	echo Ошибка запуска i2pd. Убедитесь, что Windows Defender отключен.
+) else (
+	echo Error running i2pd. Make sure Windows Defender is disabled.
+)
+explorer.exe "WindowsDefender://ThreatSettings"
+goto :eof
 
-rem ==========================================================================
+rem Добавляет в исключения WD переданный аргументом объект (вызывает окно UAC)
+rem %1 : файл для добавления в исключения Защитника Windows
+:ADD_DEFENDER_EXCLUSION
+powershell start -verb runas powershell -ArgumentList 'Add-MpPreference -Force -ExclusionPath "%~1"'
+goto :eof
 
-rem ==========================================================================
-rem ╧ЁюЎхфєЁр EchoWithoutCrLf
-rem
-rem %1 : ЄхъёЄ фы  т√тюфр.
-rem ==========================================================================
+rem Процедура EchoWithoutCrLf
+rem %1 : текст для вывода.
 :EchoWithoutCrLf
-
-    <nul set /p strTemp=%~1
-    exit /b 0
-rem ==========================================================================
+<nul set /p strTemp=%~1
+exit /b 0
diff --git a/windows/build/build.cmd b/windows/build/build.cmd
index 96baf99..99a9e1d 100644
--- a/windows/build/build.cmd
+++ b/windows/build/build.cmd
@@ -1,6 +1,6 @@
 @echo off
 
-REM Copyright (c) 2013-2025, The PurpleI2P Project
+REM Copyright (c) 2013-2026, The PurpleI2P Project
 REM This file is part of Purple i2pd project and licensed under BSD3
 REM See full license text in LICENSE file at top of project tree
 
@@ -8,7 +8,8 @@ setlocal enableextensions
 
 set CURL=%~dp0curl.exe
 set FFversion=115.20.0esr
-set I2Pdversion=2.56.0
+set I2Pdversion=2.59.0
+
 call :GET_ARGS %*
 call :GET_LOCALE
 call :GET_PROXY
@@ -17,21 +18,27 @@ call :GET_ARCH
 if "%locale%"=="ru" (
 	echo Сборка I2Pd Browser Portable
 	echo Язык браузера: %locale%, архитектура: %xOS%
-	echo.
-	echo Загрузка установщика Firefox ESR
 ) else (
 	echo Building I2Pd Browser Portable
 	echo Browser locale: %locale%, architecture: %xOS%
-	echo.
-	echo Downloading Firefox ESR installer
 )
+echo.
 
-"%CURL%" -L -f -# -o firefox.exe https://ftp.mozilla.org/pub/firefox/releases/%FFversion%/%xOS%/%locale%/Firefox%%20Setup%%20%FFversion%.exe %$X%
-if errorlevel 1 (
-	echo ERROR:%ErrorLevel%
-	pause
-	exit
-) else (echo OK!)
+if exist ..\Firefox (
+	if "%locale%"=="ru" (
+		echo Firefox уже скачан. Пропускаю.
+	) else (
+		echo Firefox already downloaded. Skip.
+	)
+	goto GET_I2PD
+)
+
+if "%locale%"=="ru" (
+	echo Загрузка установщика Firefox ESR
+) else (
+	echo Downloading Firefox ESR installer
+)
+call :DOWNLOAD firefox.exe https://ftp.mozilla.org/pub/firefox/releases/%FFversion%/%xOS%/%locale%/Firefox%%%%20Setup%%%%20%FFversion%.exe
 
 echo.
 if "%locale%"=="ru" (
@@ -94,14 +101,10 @@ if "%locale%"=="ru" (
 ) else (
 	echo Downloading language packs
 )
-"%CURL%" -L -f -# -o ..\Firefox\App\Firefox\browser\extensions\langpack-ru@firefox.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4144376/russian_ru_language_pack-115.0.20230726.201356.xpi
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
-"%CURL%" -L -f -# -o ..\Firefox\App\Firefox\browser\extensions\ruspell-wiktionary@addons.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4215701/2696307-1.77.xpi
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
-"%CURL%" -L -f -# -o ..\Firefox\App\Firefox\browser\extensions\langpack-en-US@firefox.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4144407/english_us_language_pack-115.0.20230726.201356.xpi
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
-"%CURL%" -L -f -# -o ..\Firefox\App\Firefox\browser\extensions\en-US@dictionaries.addons.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4175230/us_english_dictionary-115.0.xpi
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
+call :DOWNLOAD ..\Firefox\App\Firefox\browser\extensions\langpack-ru@firefox.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4144376/russian_ru_language_pack-115.0.20230726.201356.xpi
+call :DOWNLOAD ..\Firefox\App\Firefox\browser\extensions\ruspell-wiktionary@addons.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4215701/2696307-1.77.xpi
+call :DOWNLOAD ..\Firefox\App\Firefox\browser\extensions\langpack-en-US@firefox.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4144407/english_us_language_pack-115.0.20230726.201356.xpi
+call :DOWNLOAD ..\Firefox\App\Firefox\browser\extensions\en-US@dictionaries.addons.mozilla.org.xpi https://addons.mozilla.org/firefox/downloads/file/4175230/us_english_dictionary-115.0.xpi
 
 echo.
 if "%locale%"=="ru" (
@@ -109,8 +112,7 @@ if "%locale%"=="ru" (
 ) else (
 	echo Downloading NoScript extension
 )
-"%CURL%" -L -f -# -o ..\Firefox\App\Firefox\browser\extensions\{73a6fe31-595d-460b-a920-fcc0f8843232}.xpi https://addons.mozilla.org/firefox/downloads/file/4411102/noscript-12.1.1.xpi
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
+call :DOWNLOAD ..\Firefox\App\Firefox\browser\extensions\{73a6fe31-595d-460b-a920-fcc0f8843232}.xpi https://addons.mozilla.org/firefox/downloads/file/4411102/noscript-12.1.1.xpi
 
 echo.
 if "%locale%"=="ru" (
@@ -129,15 +131,30 @@ copy /Y firefox-portable\* ..\Firefox\ > nul
 xcopy /E /Y preferences\* ..\Firefox\App\Firefox\ > nul
 echo OK!
 
+:GET_I2PD
 echo.
+mkdir "..\i2pd" 2>nul
+for %%i in ("%cd%\..\i2pd") do set i2pd_path=%%~fi\i2pd.exe
+
 if "%locale%"=="ru" (
 	echo Загрузка I2Pd
 ) else (
 	echo Downloading I2Pd
 )
-"%CURL%" -L -f -# -O https://github.com/PurpleI2P/i2pd/releases/download/%I2Pdversion%/i2pd_%I2Pdversion%_%xOS%_mingw.zip
-if errorlevel 1 ( echo ERROR:%ErrorLevel% && pause && exit ) else (echo OK!)
-7z x -y -o..\i2pd i2pd_%I2Pdversion%_%xOS%_mingw.zip i2pd.exe > nul
+call :DOWNLOAD i2pd_%I2Pdversion%_%xOS%_mingw.zip https://github.com/PurpleI2P/i2pd/releases/download/%I2Pdversion%/i2pd_%I2Pdversion%_%xOS%_mingw.zip
+7z x -y -o..\i2pd i2pd_%I2Pdversion%_%xOS%_mingw.zip i2pd.exe > nul || (
+	echo ERROR:%ErrorLevel%
+	if "%locale%"=="ru" (
+		echo Пожалуйста, нажмите ДА в окнах UAC чтобы добавить i2pd в иключения Защитника Windows
+	) else (
+		echo Please, press YES in UAC windows to add i2pd in Windows Defender exclusion
+	)
+	call :ADD_DEFENDER_EXCLUSION "%cd%\i2pd_%I2Pdversion%_%xOS%_mingw.zip"
+	call :ADD_DEFENDER_EXCLUSION "%i2pd_path%"
+	call :WARN_ANTIVIRUS
+	%$pause% 5
+	goto GET_I2PD
+)
 del /Q i2pd_%I2Pdversion%_%xOS%_mingw.zip
 
 xcopy /E /I /Y i2pd ..\i2pd > nul
@@ -176,4 +193,43 @@ for %%a in (%*) do (
 )
 goto :eof
 
+rem Процедура скачивания файла с бесконечным повтором в случае неудачи
+rem %1 : путь к файлу для сохранения
+rem %2 : URL адрес 
+:DOWNLOAD
+if "%locale%"=="ru" (
+	echo Загружаю URL: %2
+) else (
+	echo Downloading URL: %2
+)
+"%CURL%" -k -L -f -# -o "%1" "%2" %$X% || (
+	echo ERROR:%ErrorLevel%
+	if "%locale%"=="ru" (
+		echo Попытка повторного скачивания
+	) else (
+		echo Attempt downloading again
+	)
+	%$pause% 5
+	goto DOWNLOAD
+)
+echo OK!
+goto :eof
+
+rem Предупреждает о возможном вмешательстве антивируса
+rem Предлагает его отключить, открыв окно настроек Windows Defender
+:WARN_ANTIVIRUS
+if "%locale%"=="ru" (
+	echo Ошибка распаковки i2pd. Убедитесь, что Windows Defender отключен.
+) else (
+	echo Error unpacking i2pd. Make sure Windows Defender is disabled.
+)
+explorer.exe "WindowsDefender://ThreatSettings"
+goto :eof
+
+rem Добавляет в исключения WD переданный аргументом объект (вызывает окно UAC)
+rem %1 : файл для добавления в исключения Защитника Windows
+:ADD_DEFENDER_EXCLUSION
+powershell start -verb runas powershell -ArgumentList 'Add-MpPreference -Force -ExclusionPath "%~1"'
+goto :eof
+
 :eof