# Thinstall_UnRegExtension

> Unregisters a file extension association for a Thinstall application.

Source: https://docs.capaone.com/capainstaller/vb-scripting-library/thinstall-functions/thinstall-unregextension/  
Product: CapaInstaller — a separate CapaSystems product; do not apply this page to any other.

### Description

Unregister extension

### Syntax

Thinstall_UnRegExtension(sName, sExtension) As Boolean

### Parameters

#### sName (String)

Product name

#### sExtension (String)

Extension

### Example

**VBScript**

```vb
If bStatus Then bStatus=Thinstall_Init()
If bStatus Then bStatus= Thinstall_UnRegApplication("CapaInstaller")
If bStatus Then bStatus=Thinstall_UnRegExtension("CapaInstaller", ".cis")
If bStatus Then bStatus=Thinstall_Complete()
```

[Scripting Guidelines](/capainstaller/vb-scripting-library/scripting-guidelines/)

### Related functions

[Thinstall_RegExtension](/capainstaller/vb-scripting-library/thinstall-functions/thinstall-regextension/) [Constants](/capainstaller/vb-scripting-library/addendum/constants/) [Package Property](/capainstaller/vb-scripting-library/addendum/package-property/) [Variables](/capainstaller/vb-scripting-library/addendum/variables/)