Understanding the Terms:

(64-bit) installation package. This cabinet file contains compressed data needed to deploy specific Office features; when it is missing or corrupted, the installation will stall with an error message. Microsoft Learn Why You See the Error

Antivirus Interference: Security software mistakenly flagging or deleting the archive as a false positive. How to Fix propsww2.cab Issues

Don't waste time downloading individual, potentially dangerous .cab files from the internet. The most "high-quality" way to fix a ProPlusWW2.cab error is to verify your license and download the complete, official installer package directly from Microsoft.

Key for CAB generation: AllowCdnFallback="False" forces ODT to download every required file, including both ProPlusWW1.cab and ProPlusWW2.cab, without trying to stream from the internet during installation.

: You can force the installer to extract all its files into a specific folder by running the setup file through the Command Prompt with the command (e.g., OfficeSetup.exe /extract Run as Administrator : Right-click the installation file and select Run as administrator

ProPsWW2.cab: This is a Windows Cabinet (CAB) file, which is a compressed archive containing the actual software resources (DLLs, executables, and data) for Office 2010 Professional Plus. Context of "High Quality" Downloads

Conclusion