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File Types Permitted in an Updatable Help CAB File

Updated: March 23, 2012

Applies To: Windows PowerShell 3.0

This topics lists and describes the content requirements for Updatable Help CAB files.

Updatable Help CAB File Requirements

Uncompressed CAB file content is limited to 1 GB by default. To bypass this limit, users have to use the Force parameter of the Update-Help and Save-Help cmdlets.

To assure the security of help files that are downloaded from the Internet, an Updatable Help CAB file can include only the file types listed below. The Update-Help cmdlet validates all files against the help topic schemas. If the Update-Help cmdlet encounters a file that is invalid or is not a permitted type, it does not install the invalid file and stops installing files from the CAB on the user's computer.

The Update-Help verifies the CAB contents when it unpacks the CAB. If Update-Help finds non-compliant file types in an Updatable Help CAB file, it generates a terminating error and stops the operation. It does not install any help files from the CAB, even those of compliant file types.

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