The error “certificate revocation list issued by the certifying authorities is expired” means that the system or browser cannot verify whether a digital certificate (used to secure websites or apps) is still trustworthy—because the list of revoked certificates (CRL) is out of date or inaccessible.
This often happens when:
The certificate authority (CA) didn’t update their CRL on time.
Your system can’t access the CRL distribution point (e.g., due to internet, DNS, or firewall issues).
Your system clock is incorrect.
You’re using outdated software that can’t handle CRLs properly.
🔧 How to Fix It
Here are the most effective ways to resolve this:
✅ 1. Sync Your System Date and Time
An incorrect system clock can cause CRL checks to fail.
On Windows:
Go to Settings > Time & Language > Date & Time
Toggle Set time automatically ON
Click Sync now
On macOS:
Go to System Preferences > Date & Time
Check Set date and time automatically
Also read : Network Connection Error Garmin Connect
✅ 2. Clear SSL State and Certificates
Outdated cached certificates can cause this issue.
On Windows:
Open Internet Options (search from Start)
Go to Content > Clear SSL State
Also, click Certificates > Intermediate Certification Authorities
Remove suspicious or expired entries manually
✅ 3. Update Your OS and Browser
Older versions of browsers or operating systems may have broken certificate validation.
Update Windows/macOS
Update Chrome, Edge, Firefox, etc.
✅ 4. Disable CRL Checking (Not Recommended for General Users)
For advanced/trusted environments only, you can temporarily disable CRL checking.
On Windows:
Press
Win + R, type:gpedit.msc→ enterNavigate to:
Under the Network Retrieval tab, uncheck “Define these policy settings” to let Windows skip the check.
⚠️ Warning: This reduces security and opens you to man-in-the-middle (MITM) attacks. Only do this in offline/test environments.
✅ 5. Check Firewall or DNS Blocking
Your network might be blocking access to the CRL distribution point.
Try using a different Wi-Fi or mobile hotspot.
Use DNS servers like 1.1.1.1 or 8.8.8.8.
🛠 Example: How This Happens
Suppose you’re opening a secure website (like a bank). The browser checks the site’s SSL certificate validity. It consults the Certificate Revocation List (CRL) served by the CA. If that list is outdated or unreachable, you’ll see this error.
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