[dotnet-sdk-8.0.311] dotnet tool install command get access denied error if tools already installed

[Junjun-zhao]

Application Name: GlobalToolsNETCore21Part02
OS： Windows 10 21H2
CPU: X64
.NET Build Number: dotnet-sdk-8.0.311-win-64
Also can check the information from: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/2428298

Verify Scenarios：
Windows10 21h2 x64 + dotnet-sdk-8.0.115: Pass
Windows10 21h2 x64 + dotnet-sdk-8.0.311: Fail
Windows10 21h2 x64 + dotnet-sdk-8.0.408: Fail

Issue Description:
When installing dotnet tools with "gti -c install" command, it tries to re-install the tools which already installed and gets access deny error for gti tool installation.

Repro steps:
The machine only has dotnet-sdk-8.0.311 installed. And environment variable DOTNET_ROLL_FORWARD_ON_NO_CANDIDATE_FX set as 2.

1.Open command prompt window.
2. Execute "dotnet tool install –g gti" command.
3. Navigate to a local folder with "cd {localfolderpath}" command
4. Execute "gti –c save" command.
5. Execute "gti –c install" command.

Expected Result:
"Tool is already installed" message should show if the tools were installed before.

Actual Result:

Get access deny error as it tries to re-install the tools which already installed.

Findings:

We filed this issue before, and it was closed with label "needs team triage" and seems out of track. So, file a new bug for tracking.

[dotnet-sdk-8.0.200] dotnet tool install command get access deny message · Issue #38354 · dotnet/sdk
This should be same as this issue dotnet tool install --global reinstalls even if the same version is already present which has been fixed since .NET 9 Preview 7 via PR Avoid reinstall tool already installed

DotNet Info:

.NET SDK:
 Version:           8.0.311
 Commit:            917c9fc06c
 Workload version:  8.0.300-manifests.22ac4dbc
 MSBuild version:   17.10.23+f3052339b

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19045
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\8.0.311\

.NET workloads installed:
There are no installed workloads to display.

Host:
  Version:      8.0.15
  Architecture: x64
  Commit:       50c4cb9fc3

.NET SDKs installed:
  8.0.311 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

@dotnet-actwx-bot @dotnet/compat

[Junjun-zhao]

Hi @marcpopMSFT, could you please take a look at this issue and triage it? Thanks

[Forgind]

In your other (closed) issue, it sounded like you were referring to #41746; is that right? And you just want that to be backported to 8.0.3xx and/or 8.0.4xx? I'm not convinced it's worth backporting that, but I'll add @baronfel in case he disagrees.

[Junjun-zhao]

@Forgind Yes. We think it should be also backported to 8.0.3xx and 8.0.4xx. Originally, it reproduced on 8.0.2xx and 9.0, it had been fixed on .NET 9.0 by #41746, but not 8.0.2xx. Now it doesn't work on 8.0.3xx and 8.0.4xx either.

[Forgind]

We talked about it a bit on our team and decided not to backport. Thanks for the report!

[marcpopMSFT]

To add to forgind's comments, we don't feel like this meets the servicing bar. We'll watch for additional feedback in the future.