Github para Windows no se inicia

Github para Windows no se inicia

El registro de errores generado después de la instalación cuando intento abrir la aplicación dice:

PLATFORM VERSION INFO
    Windows             : 6.1.7601.65536 (Win32NT)
    Common Language Runtime     : 4.0.30319.17929
    System.Deployment.dll       : 4.0.30319.17929 built by: FX45RTMREL
    clr.dll             : 4.0.30319.17929 built by: FX45RTMREL
    dfdll.dll           : 4.0.30319.17929 built by: FX45RTMREL
    dfshim.dll          : 4.0.41209.0 (Main.041209-0000)

SOURCES
    Deployment url          : http://github-windows.s3.amazonaws.com/GitHub.application

ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later in the log.
    * Activation of http://github-windows.s3.amazonaws.com/GitHub.application resulted in exception. Following failure messages were detected:
        + Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS
    There were no warnings during this operation.

OPERATION PROGRESS STATUS
    * [1/13/2017 7:24:38 PM] : Activation of http://github-windows.s3.amazonaws.com/GitHub.application has started.

ERROR DETAILS
    Following errors were detected during this operation.
    * [1/13/2017 7:24:38 PM] System.UnauthorizedAccessException
        - Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Internal.Isolation.IsolationInterop.GetUserStore(UInt32 Flags, IntPtr hToken, Guid& riid)
            at System.Deployment.Internal.Isolation.IsolationInterop.GetUserStore()
            at System.Deployment.Application.ComponentStore..ctor(ComponentStoreType storeType, SubscriptionStore subStore)
            at System.Deployment.Application.SubscriptionStore..ctor(String deployPath, String tempPath, ComponentStoreType storeType)
            at System.Deployment.Application.SubscriptionStore.get_CurrentUser()
            at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
            at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)

COMPONENT STORE TRANSACTION DETAILS
    No transaction information is available.

El sistema operativo es win7 de 32 bits. ¿Lo que está mal? ¿Por qué no se inicia Github?

información relacionada