Some websites do not allow a financial transaction via Firefox. Clearing 'cookies and site data' makes no difference. Microsoft Edge is OK. How to fix Firefox?
The problem occurs with Firefox (which I use a lot) but not with Microsft Edge (which previously I used only rarely). In Firefox: I can still logon, and proceed to see details, but when I enter into a financial transaction I cannot proceed further. Clearing 'Cookies and Site Data', but not 'Cached Web Content', as recommended by Firefox, makes no difference to the problem.
Chosen solution
It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}
Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)
In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.
Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.
If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.
Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.
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FredMcD said
jscher2000 If you change the Browser Agent, would that fool the website?
Many times yes, but it might actually work due to some differences between the browsers.
Sorry, that was not stated correctly.
Many times, yes, the site will try to run its code if the user agent passes the test, but the code may not work due to some differences between the browsers.
Modified by jscher2000 - Support Volunteer