GPO tool

Group Policy made searchable

A free ADMX browser or comparison tool for IT administrators. Search policies, find registry keys, and see exactly what each setting writes to the Windows Registry. Or compare two GPO backups to see exactly what has changed between them.

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Control maximum size of baseline file cache

This policy controls the percentage of disk space available to the Windows Installer baseline file cache.

The Windows Installer uses the baseline file cache to save baseline files modified by binary delta difference updates. The cache is used to retrieve the baseline file for future updates. The cache eliminates user prompts for source media when new updates are applied.

If you enable this policy setting you can modify the maximum size of the Windows Installer baseline file cache.

If you set the baseline cache size to 0, the Windows Installer will stop populating the baseline cache for new updates. The existing cached files will remain on disk and will be deleted when the product is removed.

If you set the baseline cache to 100, the Windows Installer will use available free space for the baseline file cache.

If you disable or do not configure this policy setting, the Windows Installer will uses a default value of 10 percent for the baseline file cache maximum size.

Registry Information

VendorMicrosoft
ProductMSI
CategoryWindows Installer
Applies toComputer Configuration
Supported onWindows Installer v3.0
Registry Key[HKLM]SoftwarePoliciesMicrosoftWindowsInstaller

Policy Settings

Baseline file cache maximum size

Registry Key[HKLM]SoftwarePoliciesMicrosoftWindowsInstaller
Value NameMaxPatchCacheSize
TypeREG_DWORD
Max value100
Default10