I discovered that I cannot sync with my google account protected from 2FA. In detail: # Numbered list item showing something went wrong page when I am trying to login from (about:preferences#sync); # Numbered list item Login successful with another account not protected by 2FA Note that: # Numbered list item cookie allowed; # Numbered list item using newest version; # Numbered list item protection set to standard; # Numbered list item tried to reinstall firefox but none of them are successful. I have also confirm that: # Numbered list item the account is able to sign in from other platform from mozilla(it's the account I'm using now) # Numbered list item there's no (significant) error logged from the F12 console full F12 message here: ``` GET https://accounts.firefox.com/post_verify/third_party_auth/callback?context=oauth_webchannel_v1&entrypoint=preferences-reverify&action=email&service=sync&client_id=5882386c6d801776&response_type=code&access_type=offline&scope=https://identity.mozilla.com/apps/oldsync+profile&state=Y3UDr2_XIlwjqswEnyjs1g&code_challenge=d3K0xaJKqskxM0DZJugMDgEvVMbgLGmKSuKn0fvK9kM&code_challenge_method=S256&keys_jwk=eyJjcnYiOiJQLTI1NiIsImV4dCI6dHJ1ZSwia2V5X29wcyI6W10sImt0eSI6IkVDIiwieCI6IklnQUFGX0dWSUhtQnQxczdGU1Nya3FFMTZZQ2lZb0FxSFF1R2RoNlJnMmciLCJ5IjoiLU1Gb0VvY0tMU1VVY1dqVlhEeWVkWFUyaEF2N1p3d093akNRUV9wVDhoZyJ9 [HTTP/3 200 143ms] GET https://cdn.accounts.firefox.com/settings/prod/static/css/main.47bc55cc.css [HTTP/2 200 OK 0ms] GET https://cdn.accounts.firefox.com/settings/prod/query-fix.js [HTTP/2 200 0ms] GET https://cdn.accounts.firefox.com/settings/prod/static/js/main.e5e8b95eb0758054510f.js [HTTP/2 200 0ms] sentry-config-builder Object { msg: "Config setting for sentry.dsn specified, enabling sentry for env prod!" } config-builder.ts:49:9 sentry-config-builder Object { msg: "sentry targeting: prod" } config-builder.ts:63:9 XHRPOST https://accounts.firefox.com/nimbus-experiments [HTTP/3 200 148ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/static-asset-manifest.json [HTTP/2 200 0ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/locales/zh-TW/main.92b0a10b.ftl [HTTP/2 200 0ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/locales/zh-CN/main.61fb087e.ftl [HTTP/2 200 0ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/locales/en-GB/main.948aff3a.ftl [HTTP/2 200 0ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/locales/en/main.ca2a17d4.ftl [HTTP/2 200 0ms] XHRGET https://cdn.accounts.firefox.com/settings/prod/static/locales/en-CA/main.105631bd.ftl [HTTP/2 200 0ms] XHRPOST https://graphql.accounts.firefox.com/graphql [HTTP/3 200 148ms] GET https://accounts.firefox.com/favicon.ico [HTTP/3 200 0ms] XHRPOST https://graphql.accounts.firefox.com/graphql [HTTP/3 200 144ms] webchannel WebChannelMessageToContent { target: Window, isTrusted: true, detail: {…}, srcElement: Window, currentTarget: Window, eventPhase: 2, bubbles: false, cancelable: false, returnValue: true, defaultPrevented: false, … } console.ts:40:19 webchannel WebChannelMessageToContent { target: Window, isTrusted: true, detail: {…}, srcElement: Window, currentTarget: Window, eventPhase: 2, bubbles: false, cancelable: false, returnValue: true, defaultPrevented: false, … } console.ts:40:19 XHRPOST https://graphql.accounts.firefox.com/graphql [HTTP/3 200 143ms] XHRGET https://api.accounts.firefox.com/v1/totp/exists [HTTP/3 200 142ms] GET https://cdn.accounts.firefox.com/settings/prod/static/media/moz-logo-bw-rgb.af4ff126cf0c81ef136dc2542f4a5e30.svg [HTTP/1.1 200 OK 0ms] ```