Project Reunion runtime installer shows provisioning result of E_ACCESSDENIED during install

[riverar]

Describe the bug
When attempting to install the Project Reunion runtime, package deployment succeeds but several provisioning steps appear to fail with E_ACCESSDENIED. It's not clear if the runtime installer is required to be elevated.

Steps to reproduce

1. .\ProjectReunion-0.8Preview-Install-x64.exe
2. Observe results

Deploying package: Microsoft.ProjectReunion.0.8-preview_8000.146.628.0_x86__8wekyb3d8bbwe
Package deployment result : 0x0
Deploying package: Microsoft.ProjectReunion.0.8-preview_8000.146.628.0_x64__8wekyb3d8bbwe
Package deployment result : 0x0
Deploying package: Microsoft.ProjectReunion.Main.0.8-preview_8000.146.628.0_x64__8wekyb3d8bbwe
Package deployment result : 0x0
Provisioning result : 0x80070005
Deploying package: Microsoft.ProjectReunion.DDLM.8000.146.628.0-x8-p_8000.146.628.0_x86__8wekyb3d8bbwe
Package deployment result : 0x0
Provisioning result : 0x80070005
Deploying package: Microsoft.ProjectReunion.DDLM.8000.146.628.0-x6-p_8000.146.628.0_x64__8wekyb3d8bbwe
Package deployment result : 0x0
Provisioning result : 0x80070005
All packages were installed successfully.

ProjectReunion-0.8Preview-Install-x64.exe
Windows 10 21H1 19043.985

[andrewleader]

@DrusTheAxe or @AdamBraden can you help with this?

[DrusTheAxe]

@dkbennett is Stage tried as a best-effort sort of thing? It's only expected to succeed if the installer's running elevated? If so you can wrap it with

#include <Security.IntegrityLevel.h>
…
if (Security::IntegrityLevel()::IsElevated())
{
    ...stage the package...
}

and not error in the expected not-expected-to-work case

[dkbennett]

Not sure if this is still a thing, but assigning to @DrusTheAxe for re-triage.

[DrusTheAxe]

https://task.ms/38095216

[sachintaMSFT]

This is fixed in 1.1 milestone.