Error 171 causes installation failure

Last updated on May 25, 2026

Learn how to resolve error code 171 "Unable to install the product" during Adobe app installation on Windows.

Error code 171 occurs when the installer cannot write to or access a specific registry key during installation. This is often due to insufficient permissions or a corrupted parent registry key.

The installer cannot access the registry key

Select Retry in the error dialog box to download and install the app again.

If the installation still fails, restart your device and try installing the app again.