Topic

Browser Profiles and Fingerprint Settings

Learn how MaskPilot isolates cookies and site data, keeps browser fingerprints stable, assigns proxies and extensions, and applies profile changes after a full restart.

25 articles

MaskPilot treats every browser profile as a separate workspace. Cookies, site data, fingerprint settings, proxies, and extensions stay attached to that profile, keeping the account purpose, network exit, and browser configuration within one clear boundary.

As the list grows, use the profile tags and bulk management guide to establish names and categories, then narrow the list by name, status, or tag. Tags organize profiles and can define extension scope; they do not change cookies, fingerprints, or proxies.

Build a stable profile first

Choose the browser version and core fingerprint settings before assigning a checked proxy and the extensions you need. Complete sign-in, browsing, and shutdown with a test profile before repeating the workflow at a larger scale. If websites still request a sign-in after reopening the same profile, follow the login-state troubleshooting steps to separate site sessions, cookie clearing, and profile-data recovery.

When you need to reuse configuration, copy from a baseline that has never signed in to a business website, then follow the profile-copy scope guide to assign a new proxy. A copy retains core fingerprint settings, tags, and profile-level extension choices, but not cookies, website sessions, or browser data.

Handle a failed preflight check

Before launch, the client checks sign-in, the browser, fingerprint, extensions, proxy, and local data. If “Preflight check failed” appears, use the preflight troubleshooting checklist to address each failed item instead of repeatedly changing proxies, extensions, local-process state, and browser downloads together.

Prefer consistency over constant change

Fingerprint settings create a reusable browser environment. After changing the browser version or a core fingerprint value, fully close the current profile and launch it again so the next session uses the new configuration. Frequent random changes are not a substitute for a stable setup.

If a site reports a different GPU name, isolate the WebGL vendor and renderer before changing other fingerprint fields. The WebGL GPU troubleshooting guide explains the default behavior, custom-value boundary, and restart check without treating one diagnostic page as proof of the whole environment.

If a page lists an unexpected camera, microphone, or speaker, separate permission-gated device enumeration from WebRTC routing before changing the profile. The media device list checklist explains the default real-device choice, virtual topologies, and safe relaunch test.

If a page switches to touch-sized controls or reports that touch, pointer, and hover signals disagree, check the input-device profile before changing screen or user-agent values. The touch and pointer capability checklist explains desktop and hybrid combinations, actual event input, and full-restart verification.

If a site reports CPU or memory values that differ from the physical computer, compare the browser APIs with the profile’s fixed or derived hardware mode first. The CPU and memory values checklist explains coarse API values, the stable hardware tier, and full-restart verification.

If a website’s storage quota differs from the computer’s free disk space, compare the same origin and saved storage preset instead of treating the estimate as a disk inventory. The website storage quota checklist explains usage, quota, the supported presets, and a safe restart test.

If an audio diagnostic reports a changed hash, keep the profile, browser version, test page, and method constant before editing the environment. The Web Audio fingerprint checklist explains offline audio calculations, the stable profile identity, and how to separate fingerprint results from microphone or playback problems.

If a page reports unexpected text-to-speech voices, wait for the voice list to finish loading before comparing the same profile. The system voice list checklist explains getVoices(), the platform voice setting, and how to separate speech voices from language, Web Audio, and media-device checks.

If a trusted website cannot reach a local application or device, separate the profile’s protection setting from browser permission and service availability. The local port connection checklist explains loopback and local addresses, the protected-port field, and a narrow restart comparison.

The browser version saved by a profile is a launch requirement, while a verified newer kernel already installed on the device can become the version used by the current process. Use the required-versus-running browser version guide to read both labels, verify extension compatibility, and avoid forcing a downgrade by deleting local files.

Prevent concurrent writes

An existing local process or launch operation prevents a duplicate launch on this device. A session on another device no longer blocks launch here, and the latest team run record is not a real-time online status. Before handing work to another device, prefer a normal close and check the sync result. Version checks protect uploads from conflicting overwrites; they do not automatically merge edits from two devices.

Topic

In this topic

Follow the guides for setup, then use the matching answer when a message or problem appears.

Guides

01
Getting started · Guide Create your first browser profile

Configure the browser version, core fingerprint settings, proxy, and extensions for an isolated browser profile.

02
Accounts · Guide Configure a Stable Browser Fingerprint

Choose fingerprint settings for the profile, keep them stable, and fully restart the browser so saved changes take effect.

03
Accounts · Guide Organize Browser Profiles with Tags

Use MaskPilot profile tags, name search, and status filters to organize browser profiles, then safely start, stop, retag, or delete selected profiles in bulk.

Q&A

01
Accounts · Q&A Why does a profile say it is in use?

Distinguish local running processes, remote run records, and data-version conflicts when launching or switching devices.

02
Accounts · Q&A Why Didn’t My Profile Settings Apply?

Confirm a complete shutdown, the correct profile, and which fingerprint, proxy, or extension changes require a relaunch.

03
Accounts · Q&A Prevent WebRTC IP Leaks Through a Proxy

Keep WebRTC traffic on the assigned proxy route, understand MaskPilot's recommended network policy, restart the profile, and verify the result safely.

04
Accounts · Q&A Why a Proxy Changes the Browser Time Zone

Learn how MaskPilot selects the browser time zone from the current proxy exit and troubleshoot overridden settings, route changes, or failed detection.

05
Accounts · Q&A Why a Website Shows the Wrong Language

Troubleshoot differences between browser locale, request language order, and saved site preferences when a website keeps selecting the wrong language.

06
Accounts · Q&A Why a Website Shows the Wrong Location

Separate public-IP location, browser geolocation, and saved site preferences when a proxy exit is correct but a webpage still shows another place.

07
Accounts · Q&A Why Browser Screen Resolution Looks Wrong

Separate CSS screen size, device pixel ratio, available area, and browser viewport when a website reports a resolution that differs from the display.

08
Accounts · Q&A Why the Canvas Fingerprint Changes

Understand the stability boundaries of profile-level canvas protection, then check the browser version, profile, test method, and launch state when results differ.

09
Accounts · Q&A Why Font Fingerprints Stay Stable or Change

Understand font detection, profile-stable protection, and the visible-font allowlist when test hashes change, characters disappear, or webpages use fallback fonts.

10
Accounts · Q&A Why Websites Ask You to Sign In Again

Separate site session expiry, cookie clearing, profile recovery, and the wrong browser profile when websites ask you to sign in again after a relaunch.

11
Accounts · Q&A Why Is My WebGL GPU Different?

Check why a website reports an unexpected WebGL vendor or renderer, review MaskPilot's graphics-information setting, and verify changes after a full restart.

12
Accounts · Q&A Why Is the Running Browser Version Newer?

Understand why MaskPilot may run a verified local browser version newer than the profile requirement and how to compare both labels safely.

13
Accounts · Q&A Why Are Website Media Devices Different?

Understand why a website may list unexpected cameras, microphones, or speakers, then verify permissions and MaskPilot's media device profile safely.

14
Accounts · Q&A Why Do CPU and Memory Values Differ?

Learn why websites may report CPU core and memory values that differ from the physical device, and how to verify MaskPilot profile settings safely.

15
Accounts · Q&A Why Does Website Storage Differ from Disk?

Learn why a website's storage quota can differ from free disk space, then verify MaskPilot storage settings and browser storage behavior safely.

16
Accounts · Q&A Fix a Stuck or Failed Browser Download

Identify the preparation, download, verification, installation, or launch stage that failed, then retry the browser version safely in MaskPilot.

17
Accounts · Q&A Why Did the Web Audio Fingerprint Change?

Learn why Web Audio fingerprint results can change, how MaskPilot keeps one profile stable, and how to verify the same browser environment safely.

18
Accounts · Q&A Fix a Failed Profile Preflight Check

Use the sign-in, browser, fingerprint, extension, proxy, and local-data results to fix a profile that MaskPilot blocks before launch.

19
Accounts · Q&A Why Does the System Voice List Differ?

Learn why speechSynthesis voice lists can differ, how MaskPilot handles common platform voice aliases, and how to verify a profile after restart.

20
Accounts · Q&A What Does a Browser Profile Copy Keep?

Learn which fingerprint, tag, and extension settings a MaskPilot profile copy keeps, and why it excludes proxies, cookies, sign-in state, and browser data.

21
Accounts · Q&A Why a Website Cannot Reach a Local Port

Learn why a website may fail to reach localhost, how MaskPilot local port protection works, and how to separate profile settings from browser permissions.

22
Accounts · Q&A Why Do Touch and Hover Signals Differ?

Learn how websites compare touch points with CSS pointer and hover signals, then verify the MaskPilot input-device setting after a full restart.