I have developed a click Once application that installs just fine on Windows
XP but does not on Vista. VS2005 was used to develop.

The message in the log file that gets created is as follows:
The requested operation requires elevation. (Exception from HResult:
0x800702E4)

I get no dialog popup to confirm elevation, the install just fails.

I am having to use IP address due to a problem click once has when I use the
DNS name of the installation server verses the NetBIOS name. The IP Address
was a work around for XP. I'm thinking the IP is making Vista think this is
an external address?? it's not, it's on our intranet..

I have swapped out the actual IP for xxx.xxx.xxx.xxx

Sorry for pasting this all here but thought the whole log may help you?

PLATFORM VERSION INFO
    Windows             : 6.0.6000.0 (Win32NT)
    Common Language Runtime     : 2.0.50727.312
    System.Deployment.dll         : 2.0.50727.312 (rtmLHS.050727-3100)
    mscorwks.dll             : 2.0.50727.312 (rtmLHS.050727-3100)
    dfdll.dll             : 2.0.50727.312 (rtmLHS.050727-3100)
    dfshim.dll             : 2.0.50727.312 (rtmLHS.050727-3100)

SOURCES
    Deployment url            :
http://xxx.xxx.xxx.xx.x/downloads/install/TMInstall.application
                        Server        : Microsoft-IIS/6.0
                        X-Powered-By    : ASP.NET
    Application url            :
http://xxx.xxx.xxx.xx.x/downloads/install/TMInstall_1_0_0_23/TMInstall.exe.manifest
                        Server        : Microsoft-IIS/6.0
                        X-Powered-By    : ASP.NET

IDENTITIES
    Deployment Identity        : TMInstall.application, Version=1.0.0.23,
Culture=neutral, PublicKeyToken=84b8a6240bd14d70, processorArchitecture=msil
    Application Identity        : TMInstall.exe, Version=1.0.0.23, Culture=neutral,
PublicKeyToken=84b8a6240bd14d70, processorArchitecture=msil, type=win32

APPLICATION SUMMARY
    * Online only application.
    * Trust url parameter is set.
ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later
in the log.
    * Activation of
http://xxx.xxx.xxx.xx.x/downloads/install/TMInstall.application resulted in
exception. Following failure messages were detected:
        + The requested operation requires elevation. (Exception from HRESULT:
0x800702E4)

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS
    There were no warnings during this operation.

OPERATION PROGRESS STATUS
    * [12/11/2006 2:59:00 PM] : Activation of
http://xxx.xxx.xxx.xx.x/downloads/install/TMInstall.application has started.
    * [12/11/2006 2:59:09 PM] : Processing of deployment manifest has
successfully completed.
    * [12/11/2006 2:59:09 PM] : Installation of the application has started.
    * [12/11/2006 2:59:09 PM] : Processing of application manifest has
successfully completed.
    * [12/11/2006 2:59:17 PM] : Request of trust and detection of platform is
complete.
    * [12/11/2006 2:59:19 PM] : Downloading of subscription dependencies is
complete.
    * [12/11/2006 2:59:19 PM] : Commit of the downloaded application has started.
    * [12/11/2006 2:59:20 PM] : Installation of application has successfully
completed.

ERROR DETAILS
    Following errors were detected during this operation.
    * [12/11/2006 2:59:20 PM] System.Runtime.InteropServices.COMException
        - The requested operation requires elevation. (Exception from HRESULT:
0x800702E4)
        - Source: System.Deployment
        - Stack trace:
            at
System.Deployment.Application.NativeMethods.CorLaunchApplication(UInt32
hostType, String applicationFullName, Int32 manifestPathsCount, String[]
manifestPaths, Int32 activationDataCount, String[] activationData,
PROCESS_INFORMATION processInformation)
            at
System.Deployment.Application.ComponentStore.ActivateApplication(DefinitionAppId appId, Uri activationUri)
            at
System.Deployment.Application.SubscriptionStore.ActivateApplication(DefinitionAppId appId, Uri activationUri)
            at
System.Deployment.Application.ApplicationActivator.Activate(DefinitionAppId
appId, AssemblyManifest appManifest, Uri activationUri)
            at
System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut)
            at
System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)

COMPONENT STORE TRANSACTION DETAILS
    * Transaction at [12/11/2006 2:59:19 PM]
        + System.Deployment.Internal.Isolation.StoreOperationStageComponent
            - Status: Installed
            - HRESULT: 0x0
            - Manifest: TJ3HOXEG.A05.application
        + System.Deployment.Internal.Isolation.StoreOperationSetDeploymentMetadata
            - Status: Set
            - HRESULT: 0x0
        + System.Deployment.Internal.Isolation.StoreOperationStageComponent
            - Status: Installed
            - HRESULT: 0x0
            - Manifest: TMInstall.exe.manifest
        + System.Deployment.Internal.Isolation.StoreOperationStageComponentFile
            - Status: Installed
            - HRESULT: 0x0
            - File: BULLSEYE.ICO
        + System.Deployment.Internal.Isolation.StoreOperationStageComponent
            - Status: Installed
            - HRESULT: 0x0
            - Manifest: TMInstall.exe.genman
        + System.Deployment.Internal.Isolation.StoreOperationStageComponentFile
            - Status: Installed
            - HRESULT: 0x0
            - File: TMInstall.exe
        + System.Deployment.Internal.Isolation.StoreOperationPinDeployment
            - Status: Pinned
            - HRESULT: 0x0
            - AppId:
http://xxx.xxx.xxx.xx.x/downloads/install/TMInstall.application#TMInstall.application,
Version=1.0.0.23, Culture=neutral, PublicKeyToken=84b8a6240bd14d70,
processorArchitecture=msil
        + System.Deployment.Internal.Isolation.StoreOperationSetDeploymentMetadata
            - Status: Set
            - HRESULT: 0x0
        + System.Deployment.Internal.Isolation.StoreTransactionOperationType (27)
            - HRESULT: 0x0