# Error Lets Encrypt Certificate

**URL:** https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124
**Category:** VitalPBX
**Created:** [March 19, 2026, 5:20pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124 "2026-03-19T17:20:33Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![iquest](https://forums.vitalpbx.org/user_avatar/forums.vitalpbx.org/iquest/32/654_2.png) [@iquest](https://forums.vitalpbx.org/u/iquest)
#### Post date: [March 19, 2026, 5:20pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/1 "2026-03-19T17:20:33Z")

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I’m unable to use “Let’s Encrypt”; it shows errors when I try.

I saw in another post that someone had a similar issue and you recommended updating. Does this issue have a solution in version Carrier Plus 4.2.0-1, or is it necessary to upgrade to 4.5?

 ![Error Lets Encrypt Certificate 2026-03-19 100137](https://forums.vitalpbx.org/uploads/default/original/2X/4/4fb433fd5dc815fdac4e4378efed67551fad8eda.jpeg)

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### Author: ![Techbeard](https://forums.vitalpbx.org/letter_avatar_proxy/v4/letter/t/ce7236/32.png) [@Techbeard](https://forums.vitalpbx.org/u/Techbeard)
#### Post date: [March 23, 2026, 1:45pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/2 "2026-03-23T13:45:55Z")

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I had the exact same issue on Friday on a 4.5 server, but what is odd is that it was running fine on the same server not too long ago. I wonder if it is an issue with Let’s Encrypt.

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### Author: ![miguel](https://forums.vitalpbx.org/user_avatar/forums.vitalpbx.org/miguel/32/415_2.png) [@miguel](https://forums.vitalpbx.org/u/miguel)
#### Post date: [March 27, 2026, 5:55pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/3 "2026-03-27T17:55:06Z")

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Your specific issue was solved in the latest updates of VitalPBX 4 (Debian 11)

 ![image](https://forums.vitalpbx.org/uploads/default/original/2X/b/b5cc987aa737751551818d9495d66ee7e568a88e.png)

Actually, the latest available version on Debian 11 is v4.2.0 R6

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### Author: ![dave.kaufman](https://forums.vitalpbx.org/letter_avatar_proxy/v4/letter/d/7ba0ec/32.png) [@dave.kaufman](https://forums.vitalpbx.org/u/dave.kaufman)
#### Post date: [April 6, 2026, 1:07pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/4 "2026-04-06T13:07:22Z")

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![VitalPBX Cert Error](https://forums.vitalpbx.org/uploads/default/original/2X/f/fc5e38655400e9701f638f331b79cacd415a85ae.png)  
 ![VitalPBX Version](https://forums.vitalpbx.org/uploads/default/original/2X/b/b384435bd8999afc5e895be044e2f8c91d0095df.png)  
Looks like the error is back to me.

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### Author: ![miguel](https://forums.vitalpbx.org/user_avatar/forums.vitalpbx.org/miguel/32/415_2.png) [@miguel](https://forums.vitalpbx.org/u/miguel)
#### Post date: [April 6, 2026, 3:26pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/5 "2026-04-06T15:26:30Z")

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That’s a different error. These are the possible reasons:

- Port 80 is blocked
- The GEO Firewall is blocking the Let’s Encrypt verifications.

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### Author: ![system](https://forums.vitalpbx.org/uploads/default/original/1X/672b458a1d454755270c2c16adc5316b641c3c6a.png) [@system](https://forums.vitalpbx.org/u/system)
#### Post date: [May 6, 2026, 3:27pm UTC](https://forums.vitalpbx.org/t/error-lets-encrypt-certificate/6124/6 "2026-05-06T15:27:13Z")

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