Hey there, let’s break down why you’re hitting that frustrating DW003 error paired with exit code 1603 when installing or updating Adobe Acrobat DC. Exit code 1603 is a generic Windows installer failure, but when combined with DW003, it points to specific issues with Acrobat’s third-party payload installer (Adobe Acrobat\Setup.exe). Here are the most likely causes for your Windows 7 SP1 system:

Key Causes of the Error #

• Windows 7 End-of-Support Incompatibility
  Adobe stopped official support for Windows 7 in January 2020. Modern Acrobat DC versions rely on newer system frameworks and security libraries that aren’t optimized for (or even compatible with) Windows 7. Even with SP1 installed, your OS lacks critical updates that Acrobat’s installer expects to run properly.

• Corrupted Installer Files or Creative Cloud Cache
  The Creative Cloud app may have downloaded a damaged copy of Acrobat’s setup files. Interrupted downloads or glitches in the Creative Cloud cache can leave incomplete or corrupted payloads, causing Setup.exe to fail with exit code 1603 when it tries to extract or execute components.

• Conflicting Software or Leftover Acrobat Remnants

  • Antivirus/Firewall Interference: Your security tool might be blocking the installer from modifying system files, writing to protected folders, or launching essential processes—1603 errors often stem from overzealous antivirus flags.
  • Unclean Previous Installs: If you had an older version of Acrobat or Reader (even if you uninstalled it), leftover registry entries, locked files, or orphaned services can clash with the new installation. The installer may fail when trying to overwrite or remove these remnants.

• Insufficient System Permissions

  • Non-Admin User Restrictions: Running the installer from a standard user account prevents it from accessing protected directories like Program Files or modifying the Windows Registry. Even as an admin, UAC (User Account Control) might block critical actions if you didn’t explicitly run the installer as administrator.
  • Corrupted User Profile: A damaged user profile can stop the installer from creating necessary configuration files or accessing user-specific folders, leading to installation failure.

• Missing Critical System Components
  Even though Windows 7 is unsupported, Acrobat DC requires certain older updates (like .NET Framework patches or Visual C++ Redistributables) to run. If your system is missing these runtime libraries, Setup.exe can’t initialize its components, resulting in the 1603 exit code.

内容的提问来源于stack exchange，提问作者Franck Dernoncourt