Wise Packaging

Mitigation Techniques Using ACT Shims 

11-07-2007 03:23 PM

A shim, in the software world, is a thin piece of code we wedge between Windows and an application to solve compatibility problems. The following are some specific examples of Microsoft's ACT (Application Compatibility Toolkit) Shims and where they come in handy.

Setup Issue:

  1. Apply "Windows XP" shims or apply other shims as 2003 etc..
  2. Apply "WRPMitigationlayer" shim.
  3. Apply "WRPDllRegister"shim.
  4. Apply "WRPRegDeletekey" shim.
  5. Rename the setup to "Setup.EXE"
  6. If it is showing for 16 bit component error means apply some 16 bit related shims available.

Session 0 Issues:

  1. First Automatic Mitigation.
  2. Apply "Windows XP" shims or apply other shims as 2003 etc..
  3. Apply "Session" shim.
  4. Apply"HideCursor" shim.

Hard Block Issue:

  1. Apply "Windows XP" shims or apply other shims as 2003 etc..
  2. Apply "WRPMitigationlayer" shim.
  3. Apply "WRPDllRegister"shim.
  4. Apply "WRPRegDeletekey" shim.
  5. Rename the setup to "Setup.EXE"

Soft Block Issue:

  1. It will install with little issues. (Contact Vendor)

Admin Rights Issue:

  1. Apply "Windows XP" shims or apply other shims as 2003 etc...
  2. Apply "ElevateCreateProcess" shim.
  3. Apply "RunAsAdmin" shim.
  4. Apply "RunAsHighest" shim.
  5. Apply"RunAsInvoker" shim.
  6. Apply"ForceAdminAccess" shim.

Internet Explorer Issues:

  1. First add the site to "Trusted Site".
  2. Turn on "Phising Filter" wizard.
  3. Turn off "Pop-up Blocker".

Once when the problem is solved using shims, these steps need to be followed:

Step 1: Do a setup capture configuration and take a snapshot, Start the capture

Step 2: add the shim to the shim database(C:\Windows\AppPatch).

Step 3: Install the source application. (Now this application will install properly as the Shims were applied)

Step 4: End the setup capture.

Step 5: Do a basic editing and deliver this application as a repackaged MSI. This MSI can be deployed across the network.

Hope this piece of information helps.

Cheers' Viju

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