Firefox Support Forum

When using 365 Outlook, I was sending message to Notes 365. It was working yesterday, but is failing today. I get the message noted below:

"We're sorry. We couldn't fetch your notebook. Please try again later. Details Error: The operation is insecure.Date: 2022-06-30T20:50:27.878ZSession ID: 0b74e553-3b1a-4c21-be65-b0f493b11951"

I was able to Edge to get it to work - but want to use Mozzilla...

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.google.com because this website requires a secure connection.

What can you do about it?

www.google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

When clicking advanced button there is no way to proceed:

Someone could be trying to impersonate the site and you should not continue.

Websites prove their identity via certificates. Firefox does not trust www.google.com because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.

Error code: SEC_ERROR_UNKNOWN_ISSUER

View Certificate

When I start a private window on FireFox, that same private window still has all the browsing history attached to my "normal" FireFox windows.

Ideally, I'd like to start Private Mode and have FireFox start from "zero": No access to past browsing data.

Is there a setting that allows for this?

Under Privacy and Security I have Firefox set to 'Delete cookies and site data when Firefox is closed' with no exceptions listed.

When I close and reopen Firefox, the cookies are correctly deleted, but the cache is not. I have to manually go into this setting to delete them. This also happens if I go to the menu bar setting of 'history/clear recent history'.

I want to keep my history of where I've been, but clear clear cookies and the cache every time close.

This doesn't seem like an unreasonable request for a browser that bills itself as being privacy oriented, but I don't see how to do this. Doing banking, I have to manually go into Privacy each time to get this done to clear the site.

From looking at previous answers to this question it seems the current way Firefox is designed this is "not a bug, but a feature".

Using Firefox 99.0 on a 2017 Imac.

When I join a Google Hangout and try to share my entire screen, Firefox always prompts me whether to share a window or the entire screen. I always want to share the entire screen. But when I enable the checkbox for "Remember this decision" I get this warning: Firefox can not allow permanent access to your screen.

Why does this happen? Is it because I'm on a unbuntu or is it specific to ubuntu Catalina?

While using Firefox I am unable to access two of my online accounts, one for my VPN and one for my Credit Union. So I use Microsoft Edge to access these two websites with no issue. I get this security warning using Firefox: "Secure Connection Failed An error occurred during a connection to www.ftwccu.org. PR_END_OF_FILE_ERROR The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem."

"Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.pinterest.com because this website requires a secure connection.

What can you do about it?

www.pinterest.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem."

why can't i log in to my Chase online account without a 2 step authorization process? i always get the message "we do not recognize this device" - then i have to enter a code - WHY?

Hi, Downloading files to a system directory (Linux) such as /home/me/doc/here /home/me/doc/there Have Ask me where to save files checked.

But lastDir is not a real directory I can navigate, such as /run/user/1000/doc/3dcccd48

This causes the user needs to navigate sometimes very long system directory tree for each successive file download.

In about:config I set:

 browser.download.lastDir 
 browser.download.lastDir.savePerSite	false	
 browser.open.lastDir

But every time these are obfuscated to something like: /run/user/1000/doc/3dcccd48

This introduces about 10 user interactions with mouse/keyboard for each file I download in succession.

How do I get FF to stop obfuscating real system directories for "lastDir"

Really really appreciate the help :)

I can't open anything in the browser. It always says "secure connection failed" and I cannot reach anything get anywhere within the use of the browser. No matter what I do try. I have looked at a number of workarounds posted online but nothing seems to work. I need some help. I use Windows 10

• • Hamburger menu PASSWORDS!!! It's open invitation to steal passwords!!! even from family members think about it!!!...Not that it's happen yet but...Ok scenario GUEST or THIEF using my laptop or desktop they open menu PASSWORDS BAMMMM out in open? Did you guys really think about that? maybe should be PASSWORD to open that in menu?...Not telling you to fix but please can you fix it ASAP?

Whenever I try to open google or search anything, It shows this error and only button to Go Back

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.google.com because this website requires a secure connection. What can you do about it?

www.google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

Someone could be trying to impersonate the site and you should not continue.

Websites prove their identity via certificates. Firefox does not trust www.google.com because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.

Error code: SEC_ERROR_UNKNOWN_ISSUER

Fedora Linux v102.0 rpm.

I recently faced with some weird issue, there is two setting options for cookies in about:preferences#privacy : "Delete cookies and site data when Firefox is closed" under the Cookies and Site Data and "Clear history when Firefox closes" under the History. The problem is when i restart my firefox session this two setting resets, the first becomes disabled, the second enabled with additional enabled options of Cookies, Cache and Offline website data + website cookies always deletes causing unlogining no matter is site in whitelist in Cookies setting or not. The problem preserved in any Profile, even in new created one, reinstall didn't help.

https://hpdrx-com.myshopify.com/admin/settings/apps?oauth_error=third_party_cookies

Hi Colleen,

I’m not able to log into my Bold App to review recurring customer subscription orders using Shopify.

It says that I can't open it because my browser does not allow third party cookies.

How do I change my settings so that I can view third party cookies on Firefox?

I installed Rust on my laptop and want to browse to the documentation which is installed at file:///home/lochlann/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/share/doc/rust/html/intro.html. I try to open this in Firefox and this fails with the message: Access to the file was denied

The file at /home/lochlann/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/share/doc/rust/html/intro.html is not readable.

   It may have been removed, moved, or file permissions may be preventing access.

I have read permissions on the file. No matter, it fails. I try to open the file using Firefox and navigate the directory structure rather than typing in the location. The file opens in the browser, the location is listed as file:///run/user/1000/doc/1f137432/index.html. Can you explain to me why Firefox cannot render a file that is where i put it and has appropriate permissions yet can render the same file where I did not put it? I have always been a fan but this looks more like a virus than I am comfortable with.