Browser app integration broken when using 1Password for Windows

I'm seeing the same update message in Edge, as well as in Brave. Both browsers are up to date. I've tried the 1Password Beta browser extension (2.11.1) and the 1Password Nightly browser extension (2.12.0).

Likewise for me with Vivaldi Snapshot 6.1.3035.3 (Official Build) (64-bit) and browser extension 2.11.1 from the Chrome Web Store attempting to establish a connection to 1Password Nightly for Windows 8.10.8 (81008002). This behavior (or more accurately, lack of functionality) is present both on Windows 11 Pro Insider Preview 22H2 Build 23440.1000 and Kubuntu 23.04 "The Lunar Lobster" using Linux kernel 6.2.0-23-generic. The relevant content of the BrowserSupport log is:

INFO [1P:native-messaging\op-browser-support\src\main.rs:165] Starting 1Password-BrowserSupport 8.10.8-2.NIGHTLY production build no. 81008002.
INFO [1P:native-messaging\op-browser-support\src\browser_verification\windows.rs:42] Verifying browser "C:\Windows\System32\cmd.exe"
ERROR [1P:native-messaging\op-browser-support\src\browser_verification\windows.rs:49] WinApi(Cannot find the requested object.)
INFO [1P:native-messaging\op-browser-support\src\browser_verification\windows.rs:59] name: cmd, publisher: Unknown Publisher, pid: 5604, version: 10.0.23440.1000
INFO [1P:native-messaging\op-browser-support\src\browser_verification\windows.rs:42] Verifying browser "C:\Program Files\Vivaldi\Application\vivaldi.exe"
INFO [1P:native-messaging\op-browser-support\src\browser_verification\windows.rs:59] name: vivaldi, publisher: Vivaldi Technologies AS, pid: 21748, version: 6.1.3035.3
ERROR [1P:native-messaging\op-browser-support\src\main.rs:197] Browser support error: ParentVerificationFail(WinApi(The timestamp signature and/or certificate could not be verified or is malformed.)), happened in: native-messaging\op-browser-support\src\browser_verification\windows.rs:79
Additional error context: Browser's certificate is not trusted

Hello @bshakil, @softleaf, and @RogueScholar! 👋

Thank you for reporting an issue with app integration when using the nightly version of 1Password for Windows. Our developers are currently investigating the issue, to help us narrow down the cause of the problem I'd like to ask you all to send in a diagnostics report:

Sending Diagnostics Reports (Windows)

Attach the diagnostics to an email message addressed to support+forum@1password.com.

With your email please include:

• A link to this thread: https://1password.community/discussion/140493/1password-app-integration-broken-on-microsoft-edge-nightly-8-10-8-81008002
• Your forum username: username
• Please do not post your diagnostic report to the forum. This is for your privacy and security.

The report will be in zip format. Please send the entire file.

You should receive an automated reply from our BitBot assistant with a Support ID number. Please post that number here. Thanks very much!

-Dave

ref: dev/core/core#22209

Here is the Support ID: [#STP-89169-163]

[#KAU-18417-656]

@softleaf and @bshakil

Thank you for sending in the diagnostic reports. One of my colleagues will review the reports and get back to you as soon as possible.

-Dave

ref: STP-89169-163
ref: KAU-18417-656

Had the same issue with the latest nightly releases of 1P for Windows and browser extension. Integration wouldn't work in Brave, Edge and Firefox. In my case it also broke Yubikey 2FA authentication across all web browsers and all websites (not just 1P). I've returned to beta for now and it's fine.

I've sent diagnostics two days ago [#JRH-95373-837].

The Support ID I received is: [#NKW-22361-456].

Thanks for your assistance, @1P_Dave.

Seeing the same issue with 1Password plugin from the Edge Add-ons site. The 1Password Beta plugin from the Chrome store works fine however (in Edge).

Hello @martinsteel,

Thanks for your feedback. I'm happy to hear all is well with the 1Password in the browser Beta. This is know issue with the Nightly version and I've included your report in the issue we're tracking for the Development team! 👍

ref: dev/core/core#22209