Firefox Community Forum

This has worked fine in the past, and works now in Chrome, but not Firefox. URL is https://outlook.cloud.microsoft/mail/?bO=1&msalAuthRedirect=true&sessionId=20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4

Here's the error message

UTC Date: 2026-03-30T12:16:32.476Z Client Id: 05099EAAAC364C6EBD8115436A25F2D9 Session Id: 20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4 Client Version: 20260320002.06 BootResult: fail Back Filled Errors: Unhandled Rejection: SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data:undefined|undefined:undefined|undefined:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: y@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:299099 165332/E/<@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:23542

st: 401 efe: BL0PR02CA0036

Hi, I'm Albert.

I had like 10,000 open tabs (not exaggerating) and these tabs are gone after a blue screen error and a few Windows updates. I want to restore those tabs, but I can not because the "Restore the previous session" option is grayed out.

Are there ways to restore these open tabs?

If there isn't one, then I want to restore all the websites I have visited over the past few years and manually filter them.

How do I do it?

The Firefox library contains history but the oldest history it contains is 2024 December one. I guess the dedicated folder removed my old browsing history as it was filled up?

What I read is that places.sqlite file contains all the browsing history. Is this right? My places.sqlite file size is 80.0 MB (83,886,080 bytes). Is there a size limit on this file? I wonder if this file contains all my browsing history.

I have my places.sqlite file and DB Browser installed on my computer. But I don't know what to do next after opening places.sqlite file.

If there are better suited applications for my purpose than DB Browser, please recommend me one with a little instruction.

Long story short, how do I restore my open tabs or browsing history?

Please help me.

I wanted to use the new VPN feature and the icon initially showed up in the top right, but it has disappeared and is not present in "customise toolbar" or privacy settings either.

I used to be able to clink on an image link prior to a Firefox update (I don't know which one) to go to that site. Firefox gives me that it cannot find the server. What can I do to correct this problem?

Hello. Yesterday, I deleted all the stored login information, such as cookies. Latter, I tried to make login, I filled my name and password. As usual, Facebook refuses to login, giving me a choice of extra steps necessary. I chosen to receive a security code on my e-mail. I copy and pasted it on the suitable place and click on the button to proceed.

That's when things stop working. It usually it works as expected, but now it just return to the login page, nothing filled. Bellow, an apparently relevant info the shows on browser console:

"ErrorUtils caught an error:

_.getClientCapabilities is not a function [Caught in: Passkey authentication failed during visibility callback]

Subsequent non-fatal errors won't be logged; see https://fburl.com/debugjs. Object { column: "1421", clientTime: 1774704924, extra: {}, guardList: [], hash: "ukkpfs", isNormalizedError: true, line: "86", loggingSource: "FBLOGGER", message: "_.getClientCapabilities is not a function [Caught in: Passkey authentication failed during visibility callback]", messageFormat: "_.getClientCapabilities is not a function [Caught in: Passkey authentication failed during visibility callback]", … } D_9oglqPD5n.js:79:56"

Windows11，firefox版本149.0，增强型跟踪保护设置为标准，基于 HTTPS 的 DNS”启用策略为默认保护，扩展全关。在我打开www.douyin.com的标签页时，通常要加载5秒钟甚至10秒钟，视频才会播放（如图）。作为对比，我在edge浏览器上登陆了同一个抖音账号，打开同样的书签页面，edge并未出现明显加载画面，在chrome上打开未登陆的抖音标签页也未出现明显加载画面。这个情况也许是从近期firefox自动更新后出现的？请问如何解决

I have been using virtualrailfan.com but recently have experienced non operation of the app. Using another browser does not have this difficulty. The site starts OK but going to a sub-site, it refuses to start Virtualrailfan says it is a problem on my end and the fact that another browser works, confirms this fact. They initially said zoom was the problem but changing that in the browser didn't work. Please help

When the browser is open - whether with tabs or not - it disables NVIDIA ShadowPlay. The NVIDIA overlay says “a protected app is preventing desktop capture,” and I’d agree with that if it only happened when tabs with DRM content were open, but it happens even in an empty browser.

I have "Always ask you where to save files" checked but when I save a file I don't get asked where to save the file and it's going into Downloads. I didn't have this issue before. Something isn't working right since the last few updates.

Pat

When attempting to reverse-image search an image, Google Image Search replaces the image with a blank white image.

Steps taken: Verified resistFingerprinting is false. Enabled it, got the usual colored crosshatch image. Disabled, got white box. Tested with PhotoPea (works just fine there). Tested with Chrome (works just fine there). Disabled ETP and generic tracking protections. Tested in private window (nope). Pasting to MSPaint, worked. Saving as an image file and trying to upload that way, nope.

Open to trying more things.

146.0.1 (64-bit) Windows 10 Version 10.0.19045 Build 19045 Addons that may have caused issues: UBlock Origin TamperMonkey Disabled both, same results.