Problemy z wěstotnymi zmylkowymi kodami na wěstych websydłach rozrisać

Wersijowe informacije
  • Wersijowy ID: 304211
  • Wutworjeny:
  • Awtor: milupo
  • Komentar: update
  • Přepruwowany: Ně
  • Hotowy za přełožowanje: Ně
Žórłowy kod wersije
Wobsah wersije

Firefox wěstotny certifikat websydła přepruwuje, zo by zawěsćił, zo sydło je legitimne a zo waš zwisk je zaklučowany. Jeli certifikat njeda so přepruwować, Firefox zwisk přetorhuje a pokazuje stronu „Warnowanje: Potencielne wěstotne riziko prědku“.

Tutón nastawk wujasnja, štož najhusćiše wotpowědne zmylkowe kody woznamjenjeja – SEC_ERROR_UNKNOWN_ISSUER, MOZILLA_PKIX_ERROR_MITM_DETECTED a ERROR_SELF_SIGNED_CERT – a kak móžeće juch problemy rozrisać. Hlejće Što „Waš zwisk wěsty njeje“ woznamjenja? za druhe zmylkowe kody za „Warnowanje: Potencielne wěstotne riziko prědku“.

Kedźbu: W nowšich wersijach hižo njeje móžno, so z přičinow wěstoty někotrym certifikatowym zmylkam wuhibać. Jeli tłóčatko Riziko akceptować a pokročować njewidźiće, hlejće wotrězk Hdyž njemóžeće so warnowanju wuhibać.

Zmylkowy kod rozumić

  1. On the warning page, click Advanced…
  2. Check the error code displayed.
  3. If you see:
    • SEC_ERROR_UNKNOWN_ISSUER or MOZILLA_PKIX_ERROR_MITM_DETECTED: An untrusted authority issued the certificate.
    • ERROR_SELF_SIGNED_CERT: The site is using a self-signed certificate.

Fx128WarningSEC_ERROR_UNKNOWN_ISSUER

Jeli zmylk na wjacorych wěstych sydłach wustupuje

This usually means something on your device or network is intercepting secure connections and replacing website certificates. Common causes:

  • Antivirus software scans encrypted connections
  • Corporate network monitoring tools
  • Malware

Waše antiwirusowe nastajenja přepruwować

Avast/AVG

  1. Open the Avast or AVG dashboard.
  2. Go to Menu → Settings → Protection → Core Shields.
  3. Under Web Shield, uncheck Enable HTTPS Scanning.
    In older versions of the product, you'll find the corresponding option when you go to Menu > Settings > Components and click Customize next to Web Shield.
  4. Confirm and restart Firefox.
See the Avast support article Managing HTTPS scanning in Web Shield in Avast Antivirus for details. More Information about this feature is available on this Avast Blog.

Bitdefender

  1. Open the Bitdefender dashboard.
  2. Go to Protection → Online Threat Prevention → Settings.
  3. Toggle off the Encrypted Web Scan setting.
    In older versions of the product, you can find the corresponding option labelled Scan SSL when you go to Modules > Web Protection.
In Bitdefender Antivirus Free, it's not possible to control this setting. You can try to repair or remove the program instead when you're having problems accessing secure websites.

For corporate Bitdefender products, please refer to this Bitdefender Support Center page.</div>

Bullguard

  1. Open the Bullguard dashboard.
  2. Go to Settings → Advanced → Antivirus.
  3. In the safe Safe browsing section, uncheck the Show safe results option for those websites that are showing errors.

ESET

Follow the steps in ESET’s support article to disable and re-enable SSL/TLS protocol filtering.

Kaspersky

  1. Open the Kaspersky dashboard.
  2. Go to Settings → Additional → Network.
  3. In the Encrypted connections scanning, select Do not scan encrypted connections.
  4. Restart your system.
Affected users of Kaspersky should upgrade to the most recent version of their security product, as Kaspersky 2019 and above contain mitigations for this problem. The Kaspersky Downloads page includes “update” links that will install the latest version free of charge for users with a current subscription.

Za wotposkanjom we firmowej syći přepruwować

If you’re on a work network, your IT department may need to add the interception certificate to Firefox’s trust store. See CA:AddRootToFirefox for instructions.

Za škódnu software skenować

Some malware can intercept secure connections. See Problemy Firefox rozrisać, kotrež so přez škódne programy zawinuja.

Jeli zmylk jenož na jednym sydle wustupuje

Likely causes:

  • Server misconfiguration
  • Missing intermediate certificate
  • Self-signed certificate

If the site belongs to you, test it using SSL Labs and correct any “Chain issues: Incomplete” results.

Hdyž njemóžeće so warnowanju wuhibać

You won’t see Accept the Risk and Continue if:

  • The site uses HTTP Strict Transport Security (HSTS)
  • The certificate has certain critical errors
  • Your Firefox is managed by an enterprise policy that disables bypasses

For major sites (banks, email providers…), bypassing is never allowed because it could indicate your connection is compromised.

Wo trajnych wuwzaćach

Firefox does not allow permanent certificate exceptions for most sites, especially on the public internet. For local network sites (LAN), the safest approach is to:

  • Install a valid certificate from a trusted authority
  • Or manually add your server’s certificate to Firefox’s certificate store
Warning: Permanent exceptions weaken your security. Only use them for internal, controlled networks.

Warnowanju so wuhibać (jeli móžno)

If Firefox allows it:

  1. On the warning page, click Advanced…
  2. Click Accept the Risk and Continue.

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