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Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Why does Firefox 48.0 not show qr code squares on web pages?

  • 4 uphendule
  • 1 inale nkinga
  • Igcine ukuphendulwa ngu FredMcD

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I'm using Firefox 48.0 on a WIN Vista PC & when looking at ads. (on Craigslist for example) QR codes (i.e. the actual squares) posted on the ads. do not appear on the page. However, if I look at the same page with IE 9, the squares are visible.

Why is this?

I have just installed the extension called "QR Secret Decoder Ring" (v. 0.7.0) thinking it might help but it's made no difference, as there is no "QR code square" shown to decode!! If the code squares are visible, I am assuming the above mentioned extension will show me what the code says. Is that correct?

A solution would be greatly appreciated, as I have already spent several hours trying to solve the problem.

Thank you.

All Replies (4)

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Many site issues can be caused by corrupt cookies or cache.

  • Clear the Cache and
  • Remove Cookies
    Warning ! ! This will log you out of sites you're logged in to.

Type about:preferences<Enter> in the address bar.

  • Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
  • Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe websites. Are there any problems?

Then restart.

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Hello Fred McD,

Thank you for your prompt reply.

However, please note the following: 1) My Firefox is already set to use custom settings & clear all cookies & cache when I close the browser & the problem has occurred several times, so "old" cookies should not be there, should they? 2) Firefox is set to reject 3rd party cookies. 3) If this is a site problem, why would IE9 show the QR square? 4) I'm very sorry if this changes the picture but I have just realised that I failed to say before that the QR square is visible when I print the ad. as an "xps" file & I cannot see this file with Firefox (as far as I know) so I cannot decode the square.

Thank you.

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Hello to all,

I am still waiting for a valid answer to my question of the 31st August 2016 on QR codes (above)! Is there nobody out there who can help????

As an update to the question, I am now on Firefox 48.0.2 and the situation is still the same.

I would appreciate an answer.

Thank you

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I've called for more help.