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ENVI 6.3 Patch
Overview
The ENVI 6.3 Patch resolves an issue affecting image files larger than 4 GB in ENVI 6.3.
What issue does the patch fix?
When is the patch installation required?
How to verify the patch is installed
How to install the patch
Summary
What issue does the patch fix?
When opening or working with images larger than 4 GB, ENVI 6.3 could exhibit one or more of the following behaviors:
- Image colors may change unexpectedly when zooming.
- Parts of the image may disappear while zooming.
- Data values or reflectance values across spectral bands may be incorrect.
Therefore, we strongly recommend installing the patch if you work with large image datasets and if the patch is not already installed on the system.
When is the patch installation required?
Whether the patch is required depends on when and how ENVI 6.3 was installed.
Windows: If ENVI 6.3 was downloaded on or after September 2, 2026, the patch is included in the post installation and can be installed automatically during setup. Complete the post-installer setup to install the patch.
> If ENVI 6.3 was downloaded and installed before September 2, 2026 you would need to download and install the ENVI 6.3 Patch.
Linux: If ENVI 6.3 was downloaded on or after September 2, 2026, the installer already contains the patched files.
> If ENVI 6.3 was downloaded and installed before September 2, 2026 you would need to download and install the ENVI 6.3 Patch.
macOS: All ENVI 6.3 users must download and install the patch separately.
How to verify the patch is installed
Windows:
Open a Command Prompt and run the following two commands:
powershell "(Get-Item 'C:\Program Files\NV5\ENVI63\IDL93\bin\bin.x86_64\ncom_plugins\udmcoreplugin.dll').VersionInfo"
powershell "(Get-Item 'C:\Program Files\NV5\ENVI63\IDL93\bin\bin.x86_64\ncom_plugins\udmnitfplugin.dll').VersionInfo"
Verify the following file versions to confirm the patch is already installed on your system:
udmcoreplugin.dll = 3.1.18.0
udmnitfplugin.dll = 2.2.20.0
Linux:
Open a terminal and run the following two commands:
sha256sum <ENVI_INSTALL_DIR>/idl93/bin/bin.linux.x86_64/ncom_plugins/libudmcoreplugin.so
sha256sum <ENVI_INSTALL_DIR>/idl93/bin/bin.linux.x86_64/ncom_plugins/libudmnitfplugin.so
Verify the following checksums to confirm the patch is already installed on your system:
libudmcoreplugin.so = 4c96f0b882f9916be7b14e8ed0208e8aff3914c03f77a3f3a817cd9327651d5c
libudmnitfplugin.so = ce86ee9d64fd58610f82178939020fd9c7b729cf1586853a2d2e1fcbc93b8c70
macOS:
Open a terminal and run the following command:
shasum -a 256 <ENVI_INSTALL_DIR>/idl93/bin/bin.darwin.x86_64/ncom_plugins/libudmcoreplugin.dylib
Verify the following checksum to confirm the patch is already installed on your system:
libudmcoreplugin.dylib = 331f0875f9a49000942059db72bb6e9d189faed69fbda97792b6ac31814a7163
How to install the patch
Windows:
Option 1: Reinstall using the full ENVI 6.3 installer downloaded after September 1, 2026 and allow post-installers to run.
Option 2: Download and run the ENVI 6.3 Patch for Windows.
Linux:
Option 1: Reinstall using the updated ENVI 6.3 installer downloaded after September 1, 2026.
Option 2: Download the Linux patch, extract it into the installation directory, and update file ownership if required.
macOS:
Download and run the ENVI 6.3 Patch for Mac. ENVI 6.3 must already be installed.
The ENVI 6.3 Patch is available on our download page: https://portal.nv5geospatialsoftware.com/
Summary
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Platform
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Is it required to manually download and install the patch?
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Windows
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Only for installers downloaded before Sept 2, 2026
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Linux
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Only for installers downloaded before Sept 2, 2026
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macOS
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Yes
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created by MT on 09/10/26, review by x