VanguardLH wrote in :

KenK wrote:

All of a sudden today I get an error message when I try to print a
Gmail email via Firefox on XP. Says

"Grrr! A popup blocker may be preventing the application from opening
the page. If you have a popup blocker, try disabling it to open the
window."

I don't recall using a popup blocker. I have no idea what happened. I
didn't purposely change anything. What can I do about this to return
to printing emails?

TIA

Besides what Paul mentioned about disabling all extensions and
retesting, many extensions and tweakers change settings in Firefox
that are still effected with all extensions disabled and even when
starting Firefox in its safe mode. Neither of those diagnostic steps
eliminate effects from changing settings. If disabling all extensions
doesn't work, and if starting Firefox in its safe mode doesn't work,
try resetting Firefox. The creates a new profile with all the default
settings, and no extensions yet installed.

Did you test with temporarily disabling your anti-virus program?

Have you opened a private session in Firefox and testing using that?

Even if you don't install any adblock or other content-modifying
extension into Firefox, it has its own internal blocklist. It should
not be interferring with a print dialog, though. Mozilla incorporated
the Disconnect.me blocklist into Firefox, and why the Disconnect
add-on is superfluous. That is a very weak blocklist. The number of
entries is dismal. When you visit Gmail, look at the left-side of the
address bar for a shield icon. If gray, no known trackers or harmful
scripts were detected on the site. If gray and crossed out, Enhanced
Tracking Protection (ETP) is enabled on a site (likely you choose to
disable it on the site using Site Preferences). Click on the shield
to see more info. If the shield is purple, ETP is enabled AND it
blocked trackers and suspect scripts on a site. Click on the shield
to get more info.

The old option to enable/disable tracking protection is gone. You now
have to go into Options - Privacy & Security - Enhanced Tracking
Protection, and disable what you want by selecting the Custom config
where you decide what to block. You could try the Standard level (in
case you were at the Strict level) to keep some protection to see if
the site then works correctly. The only difference that I've found
between Standard and Strict is Standard allows trackers with inprivate
sessions (but then wipes that data when you exit the inprivate window)
versus Strict that blocks trackers in both non-private and private
sessions. Allowing trackers, even in a private session, means tracking
can be achieved within that private session, but not between private
sessions. Up to you if you want to allow trackers while surfing using
a private session. You could also click on the purple shield to
change protection for just that site. I use Strict mode, and change a
site's preferences regarding ETP if I feel I can trust the site or
really need it to work; however, I configure Firefox to purge
EVERTYING on its exit, so the worse would be some tracking occurs
/during/ a non-private session. Because I use uBlock Origin, I first
thought ETP was superfluous, especially since the Disconnect.me
blocklist is so small. However, ETP also blocks cryptominer and
fingerprinting sites that aren't covered by any of the blocklists
(e.g., EasyList, EasyPrivacy, AdGuard). More info at:

https://support.mozilla.org/en-US/kb...otection-firef
ox-desktop

When printing, are you using Firefox's Print function, or somehow else
doing the printing?

I just use Gmail's Print command.

Did you allow Firefox to update itself, but have to restart it?

If it updates, which extremely rarely happens in XP (frequently on mu Win
10 system) I just leave things alone.




--
I love a good meal! That's why I don't cook.