InstallShield 2014 Express Edition
GUID stands for Globally Unique Identifier. A GUID is 128 bits long, and the algorithm used to generate a GUID guarantees each GUID to be unique. Because GUIDs are guaranteed to be unique, they can be used to identify COM classes, Product Codes, and various other codes.
For example, after a product is installed, a key is created under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and is named after the installation’s Product Code. At one time, this key was named after the Product Name. However, this caused a potential conflict. If two installations were installed on the same machine, and both shared the same Product Name, they would also share the same registry key. Because a GUID is now used, it guarantees that this conflict does not occur.
An example GUID is {5D607F6A-AF48-4003-AFA8-69E019A4496F}. Any letters in a GUID must be in uppercase.
GUIDs in Your Project
When you create an installation project, there are a number of different GUIDs that are relevant to your project.
|
GUID Name |
Description |
|
Product Code or Product GUID |
The product GUID uniquely identifies your application. |
|
Package Code or Package GUID |
The package code uniquely identifies your installation package. |
|
QuickPatch GUID |
The patch GUID uniquely identifies a QuickPatch package. |
|
Upgrade Code or Upgrade GUID |
The upgrade GUID uniquely identifies a family of products for upgrade purposes. It is important for upgrades. |
For information on when you need to change GUIDs in your project, see Updating the Package Code, the Product Version, and the Product Code.
InstallShield 2014 Express Edition Help LibraryMay 2014 |
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