POWERSHELL_TELEMETRY_OPTOUT and DOTNET_CLI_TELEMETRY_OPTOUT: setting them for all users
Short answer
UpdatedPowerShell 7 and the .NET command line tools send usage data unless an environment variable tells them not to. This tweak sets POWERSHELL_TELEMETRY_OPTOUT and DOTNET_CLI_TELEMETRY_OPTOUT to 1 for the whole system. In the registry it sets POWERSHELL_TELEMETRY_OPTOUT to 1 under HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment, and 1 more value.
HKLMSYSTEM\
POWERSHELL_TELEMETRY_OPTOUTYour previous value1
What it does
PowerShell 7 and the .NET command line tools send usage data unless an environment variable tells them not to. This tweak sets POWERSHELL_TELEMETRY_OPTOUT and DOTNET_CLI_TELEMETRY_OPTOUT to 1 for the whole system.
In the app the switch is called "Opt Out of Developer Tool Telemetry", described there as: Sets the PowerShell and .NET CLI telemetry opt-out for all users (sign out to apply).
When it helps, and when it hurts
When it helps
- Privacy for anyone who has these tools installed.
When it hurts
- Nothing. Sign out once so running programs see the new variables.
What it writes
Exactly what the switch changes, read from the app's source. Switching it off is what the app writes when you turn the tweak off again.
| Key and value | With the tweak | Switching it off |
|---|---|---|
| HKLMSYSTEM\ | 1 | Your previous valueSaved before the change, or deleted if there was none. |
| HKLMSYSTEM\ | 1 | Your previous valueSaved before the change, or deleted if there was none. |
From the app's source (pack_extra.hpp), app 2.0.0, checked .
The same change by hand
You do not need the app for this one. These commands make the changes from the table above. Run them in a Command Prompt opened as administrator, and make a restore point first.
reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v "POWERSHELL_TELEMETRY_OPTOUT" /t REG_SZ /d "1" /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v "DOTNET_CLI_TELEMETRY_OPTOUT" /t REG_SZ /d "1" /freg query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v "POWERSHELL_TELEMETRY_OPTOUT"How to undo it
In the app: Yes
Switching it off puts back exactly what was there before, value for value.
Switch the tweak off in Frozen Tweaks. The app saved what each value was before the change and writes exactly that back, or removes the value if it did not exist.
Changing several settings at once? The app's Make a restore point button, on every plan, makes a Windows restore point before you start.
Verdict
Safe. It only matters if you use PowerShell 7 or the .NET tools.
Questions
- What does the "Opt Out of Developer Tool Telemetry" tweak change in Windows?
- In the registry it sets POWERSHELL_TELEMETRY_OPTOUT to 1 under HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment, and 1 more value. The full list is in the table on this page, read from the app's source.
- Is "Opt Out of Developer Tool Telemetry" safe to switch on?
- Safe. It only matters if you use PowerShell 7 or the .NET tools. The main cost: Nothing. Sign out once so running programs see the new variables.
- How do I undo it?
- Switch the tweak off in Frozen Tweaks. Switching it off puts back exactly what was there before, value for value.
- Does it need a restart?
- Yes, the change applies after signing out once.
- Is "Opt Out of Developer Tool Telemetry" free in Frozen Tweaks?
- It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.
In the app
- Switch
- Opt Out of Developer Tool Telemetry
- Category
- Security
- Plan
- Pro
- Undo
- Yes
Related guides
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More tweak explainers
- Office telemetryMicrosoft Office sends diagnostic and usage data. What the tweak changes, when it helps, when it hurts and how to undo it.2 min read
- Cloud searchWindows Search can include results from your Microsoft account and your work account (OneDrive, Outlook, SharePoint) and keeps a history of what you searched.2 min read
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Written by
Frost LIVEFounder of Frozen Tweaks, based in Hamburg, Germany. Publishes settings guides for competitive games on his YouTube channel, Frost LIVE.
In the app
- Category
- Security
- Plan
- Pro
- Undo
- Yes
Frozen Tweaks
Free for Windows 10 and 11
58 tweaks free, each with an undo switch. Never edits game files.
v2.0.0 · 6.4 MB · Windows 10 and 11, 64-bit · free account, no payment details
Or type frozentweaks.com on your PC.
The free Windows app for competitive games.
58 tweaks free, each with an undo switch. Never edits game files.
v2.0.0 · 6.4 MB · Windows 10 and 11, 64-bit · free account, no payment details
Frozen Tweaks runs on Windows. Send the link to your PC and download it there.
Or type frozentweaks.com on your PC.