If the web-based "stub" installer continues to fail, try searching for the . These are larger files but contain all the necessary components (including acrosup64.dll ) locally, making them much less prone to "marked for installation" errors during the process.
Here is the of information related to this error, including what it means, why it occurs, and how to resolve it. acrosup64.dll is not marked for installation
This error typically halts the installation process immediately, leaving users wondering if their system is corrupted or if the software is incompatible. The good news is that this error is rarely a sign of hardware failure or a virus. Instead, it points to a specific logic check within the Windows Installer service or the software's own validation scripts. If the web-based "stub" installer continues to fail,
Some niche CAD tools check for region-specific DLLs. If you attempt to install a German-language edition on an English OS, or a network license version instead of a standalone version, the installer may fail to mark certain components because they are conditionally excluded by a LaunchCondition. Some niche CAD tools check for region-specific DLLs
