If you get an error when compiling for an ESP32 board with esp board package 2.0.10 on Windows or Linux [HC-1350]

content/Software Support/Compilation/If-you-get-an-error-when-compiling-for-an-ESP32-board-with-esp-board-package-2-0-10-on-Windows-or-Linux.md

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+---
+title: 'If you get an error when compiling for an ESP32 board with esp board package 2.0.10 on Windows or Linux'
+---
+
+Version 2.0.10 of the **esp32 board package** introduced a bug[^github-issue][^github-pr] that would cause compilation to fail for some Windows and Linux users. On Windows, the error output includes an `Access is denied` message.
+
+[^github-issue]: [Core Compilation failure on Linux in v2.0.10 #8424](https://github.com/espressif/arduino-esp32/issues/8424)
+[^github-pr]: [2.0.10 escaping fix #8433](https://github.com/espressif/arduino-esp32/pull/8433)
+
+The causes for the error are different depending on which system you're using:
+
+* [Windows](#windows)
+* [Linux](#linux)
+
+---
+
+<a id="windows"></a>
+
+## If you're using Windows
+
+On Windows, the error output may look like this:
+
+```
+Access is denied.
+cmd /c type nul > "C:\\Users\\Hannes" "Siebeneicher\\AppData\\Local\\Temp\\arduino\\sketches\\2B717D34C8CC4EA7678C7773DD033E96/file_opts"
+exit status 1
+Compilation error: exit status 1
+```
+
+The issue is expected to be fixed in the next release of the esp32 board package.
+
+Meanwhile, you can try this solution:
+
+* Use <a class="link-download" href="https://downloads.arduino.cc/arduino-1.8.19-windows.exe">Arduino IDE 1.8.19</a>
+* Downgrade to **esp32 2.0.9**:
+ * To make 2.0.9 and earlier versions available in the board manager, you need to add `https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json` as an ["Additional boards manager URL" in Preferences](https://support.arduino.cc/hc/en-us/articles/360016466340-Add-third-party-platforms-to-the-Boards-Manager-in-Arduino-IDE).
+ * You cannot use the Nano ESP32 with this version.
+
+---
+
+<a id="linux"></a>
+
+## If you're using Linux
+
+On Linux, the error output may look like this:
+
+```
+Compiling core...
+bash -c "echo '-DARDUINO_CORE_BUILD' > /tmp/arduino_build_925905/file_opts"
+>: -c: line 1: unexpected EOF while looking for matching `''
+>: -c: line 2: syntax error: unexpected end of file
+exit status 2
+Error compiling for board Adafruit ESP32 Feather.
+```
+
+The issue is expected to be fixed in the next release of the esp32 board package.
+
+Meanwhile, you can try these solutions:
+
+* Use Arduino IDE 2.1.1 or later.
+* Use Arduino 1.8.19 downloaded as `.zip` download from the official <a class="link-up-right" href="https://www.arduino.cc/en/software#legacy-ide-18x">Downloads page</a>, instead of a package manager like `apt`.
+* Downgrade to **esp32 2.0.9**:
+ * To make 2.0.9 and earlier versions available in the board manager, you need to add `https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json` as an ["Additional boards manager URL" in Preferences](https://support.arduino.cc/hc/en-us/articles/360016466340-Add-third-party-platforms-to-the-Boards-Manager-in-Arduino-IDE).
+ * You cannot use the Nano ESP32 with this version.