diff --git a/.github/workflows/check-latest.yaml b/.github/workflows/check-latest.yaml
index 05a199b..d8d3181 100644
--- a/.github/workflows/check-latest.yaml
+++ b/.github/workflows/check-latest.yaml
@@ -47,12 +47,12 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libproj-dev libaec-dev libopenjp2-7-dev libpng-dev
+          sudo apt-get install -y libproj-dev libaec-dev libopenjp2-7-dev libpng-dev python3-dev
       
       - name: Install macOS dependencies
         if: runner.os == 'macOS'
         run: |
-          brew install proj libaec openjpeg zlib
+          brew install proj libaec openjpeg zlib python
 
       - name: Build eccodes from source
         run: ./install_eccodes.sh
diff --git a/.github/workflows/check-minimum.yaml b/.github/workflows/check-minimum.yaml
index 9d0a441..4e16897 100644
--- a/.github/workflows/check-minimum.yaml
+++ b/.github/workflows/check-minimum.yaml
@@ -30,7 +30,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
-      ECCODES_VERSION: 2.19.0
+      ECCODES_VERSION: 2.30.0
 
     steps:
       - uses: actions/checkout@v4
@@ -47,12 +47,12 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libproj-dev libaec-dev libopenjp2-7-dev libpng-dev
+          sudo apt-get install -y libproj-dev libaec-dev libopenjp2-7-dev libpng-dev python3-dev
       
       - name: Install macOS dependencies
         if: runner.os == 'macOS'
         run: |
-          brew install proj libaec openjpeg zlib
+          brew install proj libaec openjpeg zlib python
 
       - name: Build eccodes from source (Linux)
         if: runner.os == 'Linux'
diff --git a/.github/workflows/check-standard.yaml b/.github/workflows/check-standard.yaml
index 961c3d4..0b08263 100644
--- a/.github/workflows/check-standard.yaml
+++ b/.github/workflows/check-standard.yaml
@@ -47,11 +47,11 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libproj-dev libeccodes-dev
+          sudo apt-get install -y libproj-dev libeccodes-dev python3-dev
       
       - name: Install macOS dependencies
         if: runner.os == 'macOS'
-        run: brew install proj eccodes
+        run: brew install proj eccodes python
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
diff --git a/.github/workflows/check-windows.yaml b/.github/workflows/check-windows.yaml
new file mode 100644
index 0000000..bb73924
--- /dev/null
+++ b/.github/workflows/check-windows.yaml
@@ -0,0 +1,60 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+
+name: Build (Windows UCRT)
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow}}-${{ github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  R-CMD-check:
+    runs-on: ${{ matrix.config.os }}
+
+    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: windows-latest,   r: 'release'}
+          - {os: windows-latest,   r: 'devel', http-user-agent: 'release'}
+
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      R_KEEP_PKG_SOURCE: yes
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-pandoc@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.config.r }}
+          r-tools-version: '44'
+          http-user-agent: ${{ matrix.config.http-user-agent }}
+          use-public-rspm: true
+
+      - name: Install dependencies
+        run: |
+          pacman -Syu --noconfirm
+          pacman -S mingw-w64-ucrt-x86_64-proj --noconfirm
+          pacman -S mingw-w64-ucrt-x86_64-eccodes --noconfirm
+          pacman -S mingw-w64-ucrt-x86_64-gcc --noconfirm
+          pacman -S mingw-w64-ucrt-x86_64-python --noconfirm
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: true
diff --git a/DESCRIPTION b/DESCRIPTION
index 2feb71c..4747b7a 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: gribr
 Type: Package
 Title: Read GRIB Files
-Version: 1.2.7
-Date: 2024-07-12
+Version: 1.2.8
+Date: 2024-08-16
 Author: Nathan Wendt <nathan.wendt@noaa.gov>
 Maintainer: Nathan Wendt <nathan.wendt@noaa.gov>
 BugReports: https://github.com/nawendt/gribr/issues
@@ -11,6 +11,6 @@ License: BSD_3_clause + file LICENSE
 RoxygenNote: 7.2.3
 Encoding: UTF-8
 NeedsCompilation: yes
-SystemRequirements: ECMWF ecCodes (>= 2.19.0)
+SystemRequirements: ECMWF ecCodes (>= 2.30.0)
 Imports: proj4, methods, utils
 Suggests: testthat, lintr, covr
diff --git a/R/zzz.R b/R/zzz.R
deleted file mode 100644
index 8b634ea..0000000
--- a/R/zzz.R
+++ /dev/null
@@ -1,29 +0,0 @@
-.onLoad <- function(libname, pkgname) {
-  # Windows will be binary distributions most of the time
-  # Need to set ECCODES_DEFINITION_PATH to avoid crash if it
-  # is not already set
-	if (.Platform$OS.type == "windows") {
-		if (Sys.getenv("ECCODES_DEFINITION_PATH") == "") {
-			normPath <- normalizePath(system.file("extdata", "definitions",
-			                                      package = "gribr"), mustWork = FALSE)
-			if (normPath == "") {
-			  warning("R was unable to set ECCODES_DEFINITION_PATH. Please set manually.")
-			} else {
-			  Sys.setenv(ECCODES_DEFINITION_PATH = normPath)
-			  Sys.setenv(GRIBR_MOD = 1)
-			}
-		}
-	}
-}
-
-.onUnload <- function(libpath) {
-	# Clean up if .onLoad made mods to env
-	if (.Platform$OS.type == "windows") {
-		if (Sys.getenv("GRIBR_MOD") == 1) {
-			Sys.unsetenv("ECCODES_DEFINITION_PATH")
-			Sys.unsetenv("GRIBR_MOD")
-		}
-	}
-
-	library.dynam.unload("gribr", libpath)
-}
diff --git a/configure.ucrt b/configure.ucrt
new file mode 100644
index 0000000..f65e838
--- /dev/null
+++ b/configure.ucrt
@@ -0,0 +1 @@
+export PATH=/ucrt64/bin:$PATH
diff --git a/install_eccodes.sh b/install_eccodes.sh
index cbe8575..937c417 100755
--- a/install_eccodes.sh
+++ b/install_eccodes.sh
@@ -17,11 +17,12 @@ if [[ -z ${OPENJPEG_INCLUDE_DIR} ]]; then
                     -DENABLE_JPG=ON \
                     -DENABLE_PNG=ON \
                     -DENABLE_AEC=ON \
-                    -DENABLE_PYTHON=OFF \
+                    -DENABLE_MEMFS=ON \
                     -DENABLE_FORTRAN=OFF \
                     -DENABLE_EXAMPLES=OFF \
-                    -DENABLE_JPG_LIBJASPER=OFF \
-                    -DENABLE_INSTALL_ECCODES_SAMPLES=OFF
+                    -DENABLE_TESTS=OFF \
+                    -DENABLE_BUILD_TOOLS=OFF \
+                    -DENABLE_JPG_LIBJASPER=OFF
 else
     echo "OPENJPEG_INCLUDE_DIR: ${OPENJPEG_INCLUDE_DIR}"
     cmake . -B build -DCMAKE_BUILD_TYPE=Release \
@@ -29,10 +30,11 @@ else
                     -DENABLE_JPG=ON \
                     -DENABLE_PNG=ON \
                     -DENABLE_AEC=ON \
-                    -DENABLE_PYTHON=OFF \
+                    -DENABLE_MEMFS=ON \
                     -DENABLE_FORTRAN=OFF \
                     -DENABLE_EXAMPLES=OFF \
-                    -DENABLE_INSTALL_ECCODES_SAMPLES=OFF \
+                    -DENABLE_TESTS=OFF \
+                    -DENABLE_BUILD_TOOLS=OFF \
                     -DENABLE_JPG_LIBOPENJPEG=ON \
                     -DENABLE_JPG_LIBJASPER=OFF \
                     -DOPENJPEG_INCLUDE_DIR=${OPENJPEG_INCLUDE_DIR}
diff --git a/src/Makevars.ucrt b/src/Makevars.ucrt
new file mode 100644
index 0000000..0974099
--- /dev/null
+++ b/src/Makevars.ucrt
@@ -0,0 +1,2 @@
+PKG_LIBS="-LC:/rtools44/ucrt64/lib -leccodes -lopenjp2 -ljasper -laec -lpng -lstdc++"
+PKG_CPPFLAGS="-IC:/rtools44/ucrt64/include"