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mozilla / geckodriver

WebDriver for Firefox
https://firefox-source-docs.mozilla.org/testing/geckodriver/
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Pre-existing add-ons don't work after starting from a custom profile #1517

Open joanjerezt opened 5 years ago

joanjerezt commented 5 years ago

System

Testcase

I developed a Javascript file to use an already created Firefox profile with one installed extension (Adblock Plus). The problem is that this extension is enabled but it’s not working.

imatge

As a workaround, one can install this extension after loading Firefox browser for first time but it doesn’t work for me because I want an already custom configuration for this extension (own filtering rules).

Unlike this bug report #1405, I’m using a NodeJS API and it doesn’t work after restarting the browser or script. I tried to develop a Python script, importing a custom profile, but the same thing happens.

Stacktrace

None.

Trace-level log

1551947288437   mozrunner::runner   INFO    Running command: "/home/juan/firefox/firefox-bin" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile.wCsS6vMoULAG"

(firefox:3458): Gtk-WARNING **: 09:28:08.702: Theme parsing error: <data>:1:34: Expected ')' in color definition

(firefox:3458): Gtk-WARNING **: 09:28:08.702: Theme parsing error: <data>:1:77: Expected ')' in color definition
1551947289677   addons.webextension.{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}  WARN    Loading extension '{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}': Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
1551947289680   addons.webextension.{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}  WARN    Loading extension '{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}': Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.
1551947290070   Marionette  INFO    Listening on port 32887
1551947290142   Marionette  WARN    TLS certificate errors will be ignored for this session
JavaScript warning: moz-extension://e47871d1-a517-4823-8195-68de26eec9c7/lib/adblockplus.js, line 0: Successfully compiled asm.js code (total compilation time 1ms; not stored in cache (too small to benefit))
1551947290271   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
1551947290274   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.
1551947290733   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
1551947290745   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.
whimboo commented 5 years ago

Which version of Adblock Plus is that?

Also could you please attach a trace-level log from geckodriver? Read more about reporting actionable bugs in our contribution guidelines.

joanjerezt commented 5 years ago

Which version of Adblock Plus is that?

Adblock Plus 3.4.3

Also could you please attach a trace-level log from geckodriver? Read more about reporting actionable bugs in our contribution guidelines.

geckodriver.log

whimboo commented 5 years ago

What I forgot the last time, can you please make sure that the preference extensions.logging.enabled is set to true?

joanjerezt commented 5 years ago

What I forgot the last time, can you please make sure that the preference extensions.logging.enabled is set to true?

Now, I set this preference to true in my custom profile to see add-ons debug messages on the log. It's attached.

geckodriver.log

It seems that when using a Marionette, Firefox loads in safe mode. Maybe this is why this extension is not working. "path":"{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}.xpi","runInSafeMode":false

Otherwise, when I code:

firefox_capabilities = DesiredCapabilities.FIREFOX
firefox_capabilities['marionette'] = False

Adblock Plus icon appears in the bar, but obviously Firefox doesn't load any webpage coded in the script.

I don't know if this a expected behaviour, and if it's expected, how to workaround this to achieve my desired result, Adblock Plus working with custom configuration.

whimboo commented 5 years ago

So I can't actually see something in the logs which would indicate a malfunction of the extension. But have a look at the very first line of the log:

1551960953830 mozrunner::runner INFO Running command: "/home/juan/firefox/firefox-bin" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile.KZNO8kKxmoFo"

I'm not sure how you tell geckodriver to use the already existent profile, but here Firefox gets started with a temporary one. So are you sure that geckodriver picks up the one you already preconfigured?

joanjerezt commented 5 years ago

I'm not sure how you tell geckodriver to use the already existent profile, but here Firefox gets started with a temporary one. So are you sure that geckodriver picks up the one you already preconfigured?

Yes, it's a copy of the same profile:

juan@debian:~/selenium-python$ shasum /tmp/rust_mozprofile.CyMYXp4cgs8o 
da39a3ee5e6b4b0d3255bfef95601890afd80709  /tmp/rust_mozprofile.CyMYXp4cgs8o
juan@debian:~/selenium-python$ shasum /home/juan/.mozilla/firefox/0yikf5wi.selenium
da39a3ee5e6b4b0d3255bfef95601890afd80709  /home/juan/.mozilla/firefox/0yikf5wi.selenium
whimboo commented 5 years ago

Please check manually by copying the profile to a different location like under /tmp and starting firefox with the -profile to point to that profile. Does that work?

joanjerezt commented 5 years ago

Please check manually by copying the profile to a different location like under /tmp and starting firefox with the -profile to point to that profile. Does that work?

Yes, it works by loading Firefox from tmp profile copied by selenium, in marionette mode and in normal mode. But not using selenium python (and NodeJS) bindings to launch browser.

juan@debian:~/firefox$ ./firefox-bin --profile /tmp/rust_mozprofile.dnDrTcors3SE --marionette imatge juan@debian:~/firefox$ ./firefox-bin --profile /tmp/rust_mozprofile.dnDrTcors3SE imatge New log attached. geckodriver.log

whimboo commented 5 years ago

Interesting. So it may be a preference geckodriver sets additionally to Marionette which might cause this problem. When you check the log you can find lines with Setting recommended pref. Try to define those in your Python code and set it to the default value, which would create an user pref geckodriver cannot override again.

whimboo commented 5 years ago

Or wait. Maybe this is also related to the settings here: https://searchfox.org/mozilla-central/rev/b2d35912da5b2acecb0274eb113777d344ffb75e/testing/geckodriver/src/prefs.rs#86-89

Here a description: https://mike.kaply.com/2012/02/21/understanding-add-on-scopes/

Can you try to set extensions.enabledScopes to 15 please?

joanjerezt commented 5 years ago

Interesting. So it may be a preference geckodriver sets additionally to Marionette which might cause this problem. When you check the log you can find lines with Setting recommended pref. Try to define those in your Python code and set it to the default value, which would create an user pref geckodriver cannot override again.

Yes, I tried it but I see the same behaviour. Adblock Plus is not working.

profile.set_preference("apz.content_response_timeout", 400)
profile.set_preference("browser.download.panel.shown", True)
    # profile.set_preference("browser.pagethumbnails.capturing_disabled", 60000)
    # profile.set_preference("browser.tabs.disableBackgroundZombification", 60000)
profile.set_preference("browser.tabs.warnOnCloseOtherTabs", True)
profile.set_preference("browser.urlbar.suggest.searches", True)
profile.set_preference("datareporting.policy.dataSubmissionPolicyAccepted", 0)
profile.set_preference("dom.disable_beforeunload", False)
    # profile.set_preference("dom.file.createInChild", 60000)
profile.set_preference("extensions.getAddons.cache.enabled", True)
profile.set_preference("extensions.webservice.discoverURL", "https://discovery.addons.mozilla.org/%LOCALE%/firefox/discovery/pane/%VERSION%/%OS%/%COMPATIBILITY_MODE%")
profile.set_preference("network.http.prompt-temp-redirect", False)
profile.set_preference("network.http.speculative-parallel-limit", 6)
profile.set_preference("security.notification_enable_delay", 500)
profile.set_preference("signon.autofillForms", True)
profile.set_preference("toolkit.cosmeticAnimations.enabled", True)

Commented preferences don't actually exist.

Can you try to set extensions.enabledScopes to 15 please?

Yes, but it don't work. It should be noted that extensions.autoDisableScopes property is fixed to 10 value and it cannot be changed by Python script (by default is 15).

traverseda commented 5 years ago

I'm having the same issue (actually an eerily similar setup, I'm also copying profiles to /tmp) and I note that if you go into the about:addons menu and click disable, then click enable, it does seem to work. It seems like toggling that value fixes this problem, although that value was already set to "enable" when I started toggling it.

traverseda commented 5 years ago

I can see that ublock starts up fine, but is disabled before the first page starts loading. I don't know what mechanism is being used to disable it...

traverseda commented 5 years ago

Can this not be reproduced by developers?

epineda commented 5 years ago

@joanjerezt, for example in python I have to force the value of extensions.autoDisableScopes doing the following undocumented hack:

profile.DEFAULT_PREFERENCES['frozen']['extensions.autoDisableScopes'] = 0
profile.set_preference('extensions.enabledScopes', 15)

thanks to a hint I saw here: https://stackoverflow.com/questions/38316910/python-selenium-what-are-possible-keys-in-firefox-webdriver-profile-preference , and doing a review of selenium python code.

To solve the same problem of #1501 ("WARN Add-on ... is not correctly signed."), but with another add-on "HAR Export Trigger", I used the configuration above and, in addition, I put the .xpi file here /home/seluser/.mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/harexporttrigger@getfirebug.com.xpi, and the add-on automatically was loaded when Firefox starts. (You can put multiple add-ons in that path if you want, for more information see: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Distribution_options/Sideloading_add-ons

Hope this help you.

whimboo commented 5 years ago

Note that there was also filed bug 1563845.

traverseda commented 5 years ago

This seems to be working for me as of 68.0.1. Can anyone else confirm?

KOLANICH commented 5 years ago

At least in 69.0b5 the problem was present.

Here is a workaround ```python def newTab(fx, url="about:blank"): wnd = fx.execute(selenium.webdriver.common.action_chains.Command.NEW_WINDOW) handle = wnd["value"]["handle"] fx.switch_to.window(handle) fx.get(url) # changes handle return fx.current_window_handle def retoggleAllTheAddons(fx): initialHandlesCount = len(fx.window_handles) addonsTabHandle = newTab(fx, "about:addons") fx.execute_script(""" let hb = document.getElementById("html-view-browser"); let al = hb.contentWindow.window.document.getElementsByTagName("addon-list")[0]; let cards = al.getElementsByTagName("addon-card"); for(let card of cards){ card.addon.disable(); card.addon.enable(); } """) if len(fx.window_handles) != 1: fx.switch_to.window(addonsTabHandle) fx.close() ```
traverseda commented 5 years ago

Error started back up in mine, very strange. On my profile about:addons opened to the "recommendations` tab, so I had to modify your workaround.

def retoggleAllTheAddons(driver):
    driver.get("about:addons")
    driver.find_element_by_id("category-extension").click()
    driver.execute_script("""
        let hb = document.getElementById("html-view-browser");
        let al = hb.contentWindow.window.document.getElementsByTagName("addon-list")[0];
        let cards = al.getElementsByTagName("addon-card");
        for(let card of cards){
            card.addon.disable();
            card.addon.enable();
        }
    """)

That does take care of this problem though.

KOLANICH commented 5 years ago

On my profile about:addons opened to the "recommendations` tab, so I had to modify your workaround.

I just disabled them in about:config. extensions.htmlaboutaddons.discover.enabled

joanjerezt commented 5 years ago

@joanjerezt, for example in python I have to force the value of extensions.autoDisableScopes doing the following undocumented hack:

profile.DEFAULT_PREFERENCES['frozen']['extensions.autoDisableScopes'] = 0
profile.set_preference('extensions.enabledScopes', 15)

thanks to a hint I saw here: https://stackoverflow.com/questions/38316910/python-selenium-what-are-possible-keys-in-firefox-webdriver-profile-preference , and doing a review of selenium python code.

To solve the same problem of #1501 ("WARN Add-on ... is not correctly signed."), but with another add-on "HAR Export Trigger", I used the configuration above and, in addition, I put the .xpi file here /home/seluser/.mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/harexporttrigger@getfirebug.com.xpi, and the add-on automatically was loaded when Firefox starts. (You can put multiple add-ons in that path if you want, for more information see: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Distribution_options/Sideloading_add-ons

Hope this help you.

Yes, this code solves this bug. Thanks.

imatge

whimboo commented 5 years ago

@mitsukuri it's hard to say something as long as you don't attach a trace log.

w- commented 5 years ago

And the code to generate it is

from selenium.webdriver import Firefox, FirefoxProfile
from selenium.webdriver.firefox.options import Options

profile = FirefoxProfile( "c:/firefox/profiles/test")
profile.DEFAULT_PREFERENCES['frozen']['extensions.autoDisableScopes'] = 0
profile.set_preference('extensions.enabledScopes', 15)

opts = Options()
opts.log.level = "trace"

ff = Firefox( firefox_profile=profile, options=opts)

ff.get( "https://google.com")
ff.quit()

The extension (UMatrix in my case) is pre-installed to the test profile.

I also have the same issue where it is not working 68.2.0 macos 10.14.6 selenium 3.141.0

https://gist.github.com/w-/7d1773563e317a07871b280f503b5d36

w- commented 5 years ago

Error started back up in mine, very strange. On my profile about:addons opened to the "recommendations` tab, so I had to modify your workaround.

def retoggleAllTheAddons(driver):
    driver.get("about:addons")
    driver.find_element_by_id("category-extension").click()
    driver.execute_script("""
        let hb = document.getElementById("html-view-browser");
        let al = hb.contentWindow.window.document.getElementsByTagName("addon-list")[0];
        let cards = al.getElementsByTagName("addon-card");
        for(let card of cards){
            card.addon.disable();
            card.addon.enable();
        }
    """)

That does take care of this problem though.

@traverseda thank you for this. saved me the trouble of figuring this out myself.

whimboo commented 5 years ago

@mitsukuri sorry for the delay in my answer. I just had a look at your tracelog and noticed that I forgot to tell that you also have to set the preference extensions.logging.enabled to true for the Firefox profile to use. Can you please do that and provide another trace log? Thanks.

whimboo commented 5 years ago

Is the addon actually get disabled? Which one is it exactly for you? Please have a look into the Addon manager. The log doesn't actually have the wanted information. :/

lock[bot] commented 4 years ago

This issue has been automatically locked since there has not been any recent activity after it was closed. If you have run into an issue you think is related, please open a new issue.

whimboo commented 4 years ago

Sorry, that this issue was locked by the lock bot. We should actually keep it open until we figured out the reason.

@mitsukuri could you maybe attach a pre-configured profile (as zip file) which exhibits the problem? It would help me for testing, so that I won't have to create it on my own. Please also include any other necessary changes. Also if possible a small Python test could be good to have. Thanks.

KOLANICH commented 4 years ago

Sorry, that this issue was locked by the lock bot. We should actually keep it open until we figured out the reason.

You shouldn't have introduced that f*****g bot at all.

reinsch82 commented 4 years ago

I think I've nailed it.

What I did:

  1. Cleaned the test profile in question by deleting all the files in corresponding folder
  2. Launched it in a new browser from about:profiles.
  3. Installed an extenstion into it (uMatrix, but could be just any).
  4. Closed the browser with that profile.
  5. Ran the selenium script -> Everything's fine, uMatrix was up and working.
  6. Closed the script-instantiated brower.
  7. [Crucial] Launched the test profile again from about:profiles.
  8. Repeated 4 and 5: Gotcha! The uMatrix flashed for a second and disappeared.

At this point it became apparent that step 7 ruins the config in some way.

I cleaned the test profile once again and recreated it, this time saving a backup. Then I repeated steps 2..7 and diffed the profile with its backup. It turned out that some change to prefs.js was the culprit.

After some fiddling I found that it was a user_pref("extensions.lastAppBuildId", "20191202093317") entry that did the trick. If I remove or decrement it, eveything's fine. If it's there, the extension will misbehave and disappear.

Now, I've tried to keep that in place but increment other instances of 20191202093317 across the prefs.js, wondering if that will do, but to no avail.

I also converted 2019-12-02 09-33-17 to unix epochs (1575279197 GMT / 1575268397 local time) but those are nowhere to be found in prefs.js

I'm not sure where to go from here but at least I'm 100% positive that mere deletion or decrementing of extensions.lastAppBuildId to a lesser value does resolve the problem for me.

fresh prefs.js prefs.js modified in step 7

Happy new year everyone!

Can confirm this partially I think. I also decremented this number by 1 and it worked fine.

traverseda commented 4 years ago

Wow, that's some great progress. Much more reproducible now.

dkhokhlov commented 4 years ago

The workaround works like a charm.

jeanmonet commented 4 years ago

Trying to further contribute to this issue. I experience the same behavior on Ubuntu 18.04, with selenium, gecko, marionette and Firefox. I've set the profile path to the relevant .mozilla/firefox/[profile_code].

Upon browser startup, the add-ons appear briefly on the task bar, than they disappear (and do not seem to work). I can go and disable then re-enable them from the config window, which causes them to re-appear on the taskbar.

A previous version of Firefox was working fine (probably 1 year ago).

I've tried changing extensions.enabledScopes from 5 to 15, but the issue wasn't solved (extensions appearing in the first instance means that they are already within scope).

I've enable extensions logging. Here are some relevant log entries for the ghostery addon (as example):

1585572667108   addons.xpi  DEBUG   Loading bootstrap scope from jar:file:///home/jeanmonetuser/.mozilla/firefox/w0lgybv7.default/extensions/firefox@ghostery.com.xpi!/
1585572667108   addons.xpi  DEBUG   Calling bootstrap method startup on firefox@ghostery.com version 8.4.6

1585572667120   addons.manager  DEBUG   Starting provider: PluginProvider
1585572667120   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1585572667121   addons.manager  DEBUG   Provider finished startup: PluginProvider
1585572667124   addons.manager  DEBUG   Completed startup sequence

1585572668113   addons.xpi  DEBUG   Changed add-on firefox@ghostery.com in app-profile

1585572669280   addons.xpi-utils    DEBUG   Add-on firefox@ghostery.com modified in app-profile

1585572670511   addons.xpi-utils    DEBUG   Make addon app-profile:firefox@ghostery.com visible
1585572670511   addons.xpi  DEBUG   Updating XPIState for {"id":"firefox@ghostery.com","syncGUID":"{23916279-ac32-48de-ab69-7800e08369cb}","version":"8.4.6","type":"extension","loader":null,"updateURL":null,"optionsURL":"app/templates/hub.html","optionsType":3,"optionsBrowserStyle":true,"aboutURL":null,"defaultLocale":{"name":"Ghostery – Privacy Ad Blocker","description":"Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.","creator":"Ghostery","developers":null,"translators":null,"contributors":null},"visible":true,"active":false,"userDisabled":false,"appDisabled":false,"embedderDisabled":false,"installDate":1540865709000,"updateDate":1585572666000,"applyBackgroundUpdates":1,"path":"/tmp/rust_mozprofile.BzZMF0f1AiOe/extensions/firefox@ghostery.com.xpi","skinnable":false,"sourceURI":null,"releaseNotesURI":null,"softDisabled":false,"foreignInstall":false,"strictCompatibility":true,"locales":[{"name":"Ghostery ........","creator":"Ghostery","developers":null,"translators":null,"contributors":null,"locales":["nl"]}],"targetApplications":[{"id":"toolkit@mozilla.org","minVersion":"52.0","maxVersion":null}],"targetPlatforms":[],"signedState":2,"seen":true,"dependencies":[],"incognito":"spanning","userPermissions":{"permissions":["webNavigation","webRequest","webRequestBlocking","cookies","tabs","storage"],"origins":["http://*/*","https://*/*","https://www.ghostery.com/*","https://apps.ghostery.com/*","https://staging-apps.ghostery.com/*","https://gcache.ghostery.com/*","https://staging-gcache.ghostery.com/*","https://account.ghostery.com/*","https://account.ghosterystage.com/*"]},"icons":{"16":"app/images/icon16.png","48":"app/images/icon48.png","128":"app/images/icon128.png"},"iconURL":null,"blocklistState":0,"blocklistURL":null,"startupData":null,"hidden":false,"installTelemetryInfo":null,"recommendationState":{"validNotAfter":1736713913000,"validNotBefore":1578925913000,"states":["recommended"]},"rootURI":"jar:file:///tmp/rust_mozprofile.BzZMF0f1AiOe/extensions/firefox@ghostery.com.xpi!/","location":"app-profile"}
# in above line note: "active":false

# LINE A
1585572670518   addons.xpi  DEBUG   Calling bootstrap method shutdown on firefox@ghostery.com version 8.4.6

# LINES B & C
1585572670642   addons.xpi  DEBUG   Loading bootstrap scope from jar:file:///tmp/rust_mozprofile.BzZMF0f1AiOe/extensions/firefox@ghostery.com.xpi!/
1585572670642   addons.xpi  DEBUG   Calling bootstrap method update on firefox@ghostery.com version 8.4.6

1585572670694   addons.xpi  DEBUG   Updating for XPIState {"id":"firefox@ghostery.com","syncGUID":"{23916279-ac32-48de-ab69-7800e08369cb}","version":"8.4.6","type":"extension","loader":null,"updateURL":null,"optionsURL":"app/templates/hub.html","optionsType":3,"optionsBrowserStyle":true,"aboutURL":null,"defaultLocale":{"name":"Ghostery.. Privacy Ad Blocker","description":"Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.","creator":"Ghostery","developers":null,"translators":null,"contributors":null},"visible":true,"active":true,"userDisabled":false,"appDisabled":false,"embedderDisabled":false,"installDate":1540865709000,"updateDate":1585572666000,"applyBackgroundUpdates":1,"path":"/tmp/rust_mozprofile.BzZMF0f1AiOe/extensions/firefox@ghostery.com.xpi","skinnable":false,"sourceURI":null,"releaseNotesURI":null,"softDisabled":false,"foreignInstall":false,"strictCompatibility":true,"locales":[{"name":"Ghostery .............","creator":"Ghostery","developers":null,"translators":null,"contributors":null,"locales":["nl"]}],"targetApplications":[{"id":"toolkit@mozilla.org","minVersion":"52.0","maxVersion":null}],"targetPlatforms":[],"signedState":2,"seen":true,"dependencies":[],"incognito":"spanning","userPermissions":{"permissions":["webNavigation","webRequest","webRequestBlocking","cookies","tabs","storage"],"origins":["http://*/*","https://*/*","https://www.ghostery.com/*","https://apps.ghostery.com/*","https://staging-apps.ghostery.com/*","https://gcache.ghostery.com/*","https://staging-gcache.ghostery.com/*","https://account.ghostery.com/*","https://account.ghosterystage.com/*"]},"icons":{"16":"app/images/icon16.png","48":"app/images/icon48.png","128":"app/images/icon128.png"},"iconURL":null,"blocklistState":0,"blocklistURL":null,"startupData":null,"hidden":false,"installTelemetryInfo":null,"recommendationState":{"validNotAfter":1736713913000,"validNotBefore":1578925913000,"states":["recommended"]},"rootURI":"jar:file:///tmp/rust_mozprofile.BzZMF0f1AiOe/extensions/firefox@ghostery.com.xpi!/","location":"app-profile"}
# in above line note only change from previous similar call: "active":true

1585572670698   addons.xpi-utils    DEBUG   Updating add-on states

Applying the suggested monkey-patch

If I set firefox_profile.set_preferences('extensions.lastAppBuildId', '[number from prefs.js - 1]'), as suggested above (FIX), Selenium/Firefox seems to load and keep extensions active. If I then remove this setting and re-launch, the extensions remain active.

HOWEVER, if I manually launch Firefox (ie not via Selenium, but via OS), which uses the same profile, close Firefox, then re-launch Selenium/Firefox, extensions appear and disappear again.

If I re-implement FIX, extensions remain visible again.

Note, when I apply FIX, lines A, B and C (see log extract above) seem to disappear from the log.

Hope this helps for finding a permanent fix.

furqanmlk commented 4 years ago

Is there any update on this issue. Workaround is working fine so far

var options = new FirefoxOptions();
options.SetPreference("extensions.lastAppBuildId", "<apppID> -1 ");
Dystopian commented 3 years ago

I'm sorry if offtopic but maybe it will help somebody. I migrated Firefox profile from Windows 7 Firefox 32bit to Windows 10 Firefox 64bit and failed to get addons working. I removed extensions.lastAppBuildId pref, restarted FF and now addons work.

Sajev commented 2 years ago

Apologies for the necro, but I'm facing the same issue on firefox 102. Tried the workaround however nothing changes. Also tried to use the install_addon function but that is now deprecated from selenium.. Is there a fix that I'm not aware of?

Using selenium with Python btw