These settings were changed from outside of Brave. To protect you, Brave reset them

Brave Browser
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1

Hi everyone,

I’m seeing the popup:

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image600×313 11.3 KB

Brave reset:

  • Default search engine

  • Pinned tabs

However, in this case:

  • No extensions are installed

  • Brave Sync is not enabled

    I’m trying to understand what could trigger this detection when extensions and sync are not involved.

    Could this be caused by:

    • Brave/Chromium internal settings format changes after an update?

    • Brave auto-update running after an OS update or reboot?

    • Antivirus or system tools touching the profile files?

    • Profile checksum validation failures after a crash/shutdown?

    • Any known Brave bug related to settings migration?

    Is there a way to check which process or event caused Brave to consider the settings externally modified?

    Any insight from Brave team members or users who faced the same issue would be appreciated.

    Thanks!Brave/Chromium internal settings format changes after an update?

    Brave auto-update running after an OS update or reboot?

    Antivirus or system tools touching the profile files?

    Profile checksum validation failures after a crash/shutdown?

    Any known Brave bug related to settings migration?

    Thank You!

2

@Kill_bill

“Is there a way to check which process or event caused Brave to consider the settings externally modified?”

Found File: app/settings_strings.grdp in brave/brave-core repository, master branch. github

Line Details:

<message name="IDS_SETTINGS_RESET_DSE" desc="A string that is used to describe the DSE setting.">
    Default Search Engine (DSE)
</message>

So … the string “Default Search Engine (DSE)” appears in the current Brave master branch.

The IDS_SETTINGS_RESET_DSE identifier shows it’s used for a UI element that resets or describes the Default Search Engine setting.

Replacing my earlier writing, here … turns out, that text string ResetProfileBanner is found within:

text string static bool ShouldShowResetProfileBanner(Profile* profile);

that is found within file reset_settings_handler.h that is currently at

https://github.com/brave/chromium/blob/606669d3026a48d71f327208f43347610f7505b2/chrome/browser/ui/webui/settings/reset_settings_handler.h

That probably means, Brave Browser was not satisified at some point, and did something of a reset of, or parts of, your Brave Browser profile.

cc: @Mattches

3

@Kill_bill

In a nutshell, Brave Browser encountered something that it did not expect.

Re the mystery, I put the question to Perplexity.ai that responded:

Brave’s generic warning that a settings file or preference was modified in a way Brave considers external, and then Brave automatically restored the affected setting to its default. In the cases I (Perplexity.ai) found, Brave associates this popup with settings like the default search engine and pinned tabs, but the exact low-level trigger is not shown in the UI text itself.

The browser’s way of saying that the profile’s settings state no longer matched what Brave expected, so it treated the change as coming from outside the normal settings UI and reset it for protection.

The most plausible triggers are a profile/settings migration, a bad or unexpected update to the profile data, another process touching Brave’s profile files, or a corruption/inconsistency in the settings store after a crash or shutdown.

No public Brave explanation naming a single precise event that produces that exact popup text.

The following text string:

  • “These settings were changed from outside of Brave”

is also in file:

`https://github.com/brave/brave-core/blob/master/app/settings_strings.grdp’

<message name="IDS_SETTINGS_RESET_AUTOMATED_DIALOG_V2_BODY" desc="The body of the dialog informing the user that automated resetting of some settings occurred.">
These settings were changed from outside of Brave. To protect you, Brave reset them.
`

PS. In the future, please include in your Original Posts:

  • Brave Browser version numbers
  • Operating System version numbers
4

@Kill_bill those things that you listed could potentially be the source/cause of the issue but it’s hard to tell. Do you recall making any recent changes and/or installing any new software on your machine before seeing this message?

5

This just happened to me as well. I turned on the pc and homepage, search engine, new tab page and more had changed for no apparent reason. I used startpage and brave didn’t like it but I’ve been doing the same for years with no issues before today. May 1, 2026