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ray-lothian / UserAgent-Switcher

A User-Agent spoofer browser extension that is highly configurable
https://webextension.org/listing/useragent-switcher.html
Mozilla Public License 2.0
934 stars 144 forks source link

Issues with cloudflare sites - Access denied based on browser signature #66

Closed numericOverflow closed 4 years ago

numericOverflow commented 4 years ago

I noticed that numerous sites utilizing cloudflare seem to reject connections from my browser when I have the addon enabled. Simply disabling the "User-Agent Switcher and Manager" addon and refreshing the page gets around the issue.

I tried the "reset" feature in UASM, but that didn't fix the issue, I was still shown the cloudflare error page instead of my requested web page. I'd expect that the default user agent should be sent in this case, and would not be suspicious to cloudflare.

I've attached a screenshot of the error I get, along with my exported config file for use replicating the issue. I'm on Win10 with FF version 72.0.2 (64-bit).

useragent-switcher-preferences.json.txt

cloudflare_2020-01-27_145711x

ray-lothian commented 4 years ago

Your global rule is not a valid UA string. Use something general such as "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0"