signin.costco.com

[adguard-bot]

Issue URL (Incorrect Blocking)

http://signin.costco.com

Comment

I am unable to log in to costco.ca (which goes through signin.costco.com) with AdGuard enabled. Even when I've disabled every single filtering option in the app, it only works if I actually quit AdGuard.
Username: @deviantintegral

Screenshots

Screenshot 1

Screenshot 1 with AdGuard disabled

System configuration

Information	Value
AdGuard product:	AdGuard for Mac v2.15.1.1731 release
System version:	macOS 14.6.1
Browser:	Safari
License type:	paid
Tracking protection:	disabled
DNS filtering:	disabled
Filters:	Ad Blocking: AdGuard Base
Browsing Security:	disabled
Browsing Security statistics:	disabled
Userscripts:	disabled
Userstyles:	disabled
Other extensions used:	1Password, Kagi for Safari

[deviantintegral]

I think there was lag between changing my settings and them taking effect. I've narrowed this down to filters - I can replicate with these filters enabled but DNS filtering, stealth mode, phishing protection, and AdGuard Extra disabled. I'll see if I can narrow down the ruleset and rules:

[deviantintegral]

I now wonder if this a bug in the AdGuard proxy and not the rules themselves. I wasn't seeing all of the requests in the filtering log that I saw in Safari. Then I restarted, and I now see a dropped network connection that AdGuard says it let pass. When I quit AdGuard this error doesn't happen and I can log in.

[Sergey-Lyapin]

Hello @deviantintegral
I was able to log in successfully, is this issue still relevant?

[deviantintegral]

Yes, I can still replicate it, and fix it by quitting AdGuard.

Is there any delay in changing the following settings?

• Advanced tracking protection under Stealth Mode
• Phishing and malware protection under Security
• The Extensions checkbox under Extensions

If not, then all I have left enabled is AdGuard Base filter. So, I think the issue is either in one of those rules, or some bug in the filtering process itself.

I also noticed similar behaviour with logging in at aircanada.com with Safari's web inspector showing "The network connection was lost" and not records of the same request in AdGuard's filtering log.

[deviantintegral]

I turned off the last remaining filter (the base filter) and restarted, and I can replicate this still. The only thing that fixes it is fully quitting AdGuard. I've also since upgraded to macOS 15 / Safari 18.

I also noticed AdguardTeam/AdguardForMac#1466 so I may upgrade to the latest nightly and see if things are improved.

[deviantintegral]

I've confirmed this is still an issue in version 2.16.0.1814 nightly. At this point, I'll be waiting for suggestions from anyone with AdGuard.

[Alex-302]

@deviantintegral Hi.
Could you please test both rules?

/.*/$document
/.*/$stealth

They will apply to all requests. Then must be deleted.

[deviantintegral]

What were you hoping to see with those? Something in the logs? They blocked all access to all pages.

[Alex-302]

Sorry. Forgot @@
Correct rules (unblocking)

@@/.*/$document
@@/.*/$stealth

These rules must completely disable filtering rules and AdGuard injections (cosmetic rules, scriptlets, AG extensions).

[Sergey-Lyapin]

@deviantintegral

[deviantintegral]

Unfortunately those rules didn't fix the issue. I saw them immediately working (ads and other things were unblocked), but I was unable to sign in. And still, quitting AdGuard and reloading the page let me log in successfully.

[Sergey-Lyapin]

Hello @deviantintegral
I recreated the issue en CoreLibs repo.