Firefox plus Sandboxie 5.30 fails to load pages

Hi Mac29,

Do you happen to use a similar network setup as the one this user provided?:
https://community.sophos.com/products/sandboxie/f/sandboxie-forum/113073/firefox-problems 

If so, please make changes and let us know if that alleviates the problem.

-Can you provide more context? What are the pages that don't load? 
-Do they stay a blank page? Do they return any messages at all at any point? 
-Do other browsers behave similarly inside the Sandbox?
-Have you tried a new Firefox profile + new sandbox with default settings combo? 

Any additional info you can provide for me to set up a test scenario would be greatly appreciated. 

Regards,

Per your instructions, finally finding that  v h was using a TP Link router. I can confirm I do not use one. Virtually any page, including my homepage, does not load. Top Sites will not load. Bing, Wikipedia, Google, Weatherunderground, I could go on and on. In Firefox w/o Sandboxie everything works. No errors or messages when pages don't load in Sandboxie . Fifteen minutes later a single tab or multiple tabs just show the 'wheel' spinning.

Other browsers, ex. Opera, run fine in Sandboxie. It's CLEAR it has something to do with the W10 update to 1903 and Sandboxie plus Firefox.

Previously Sandboxie ver 5.30 ran fine before Windows updated. I've "Refreshed" Firefox. Will try the combination w/o uBlock Origin (my only extension), w/o any chosen search engine, using a fresh Profile. Tried v k's solution the network.dns.disableIPV6 change to True. That did not solve. 

Thank you.

Hi Mac29,

v k user is not only reporting the problem with a TP link, his last posts further explain his specific setup and the DNS changes ( he also tested with ASUS routers), so you may want to double check that.  I am still not sure if you are using a similar setup, but it won't hurt to double check. 

Firefox works in win 10 1903 + Sbie, so let's have you test the following:

1 - Please use the latest beta: SBIE BETA VERSIONS
2 - Create a new Sandbox with default settings 
3 - Create a new firefox profile (outside Sandboxie)
4 - Launch Firefox in the new Sandbox with the new profile 

Let me know how that goes.
Also, can you confirm the repro steps? 

Let's have have a look at your config file

Configure--> Edit configuration
Copy-paste the output on your response.

Thanks!

Barb,

Thanks for all your help, and the quick response. I did not test all the things I could have. After I got your email re: the beta I followed instructions for that. Everything works fine AFAICT.

I think what you're asking for is a copy of my entire about:config from Firefox, correct? Let me do that and I'll post back.

Thank you,

Mac

Barb,

I can't seem to copy everything in about:config file (for the new Firefox Profile) but I've saved it as the about config.xul file. If there's a way to post that, or get it to you I'll be more than glad to do so. If not can I open an .xul file in a text editor and then Copy & Paste?

Thanks again,

Mac

One last note. This beta still has issues with MS Outlook page and Bing. In Firefox alone, no problem. With the beta version of Sandboxie Firefox will open Bing from a link, then won't open Outlook page, then if I switch tabs back to check Bing again it's nada. Just the wheel spinning. Other browsers: no problem.

Just FYI.

Hi Mac29,

What I needed was your Sandboxie configuration file, not Firefox's. But since your original issue is solved, there's no need for you to post that. 

Regarding your Outlook web access issue, we have a dedicated thread for it:
https://community.sophos.com/products/sandboxie/f/sandboxie-forum/113052/cant-log-in-to-outlook-email-sandboxed-firefox

Regards,

Thanks again Barb!