# Registry fails to download with certificate error in 1.10.11

**URL:** <https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390>\
**Category:** General Usage\
**Created:** [March 25, 2026, 5:49pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390 "2026-03-25T17:49:20Z")\
**Posts on this page:** 10\
**Page:** 1

<div class="post-metadata">

**Author:** ![co1emi11er](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/co1emi11er/32/206849_2.png) [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Post date:** [March 25, 2026, 5:49pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/1 "2026-03-25T17:49:20Z")

</div>

What happened between 1.10.10 and 1.10.11 that would have broken the registry for me?

I am on a work computer, so it is a certification issue.

# Julia 1.10.10

 ![image](https://global.discourse-cdn.com/julialang/original/3X/9/8/98fedb52d1cea72901f35c0f21a7aa0821761b79.jpeg)

# Julia 1.10.11

 ![image](https://global.discourse-cdn.com/julialang/original/3X/9/3/93629f96714cb3ce0a913008500f0e7604b540e2.jpeg)

I can’t really download packages anymore.

---

<div class="post-metadata">

**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [March 25, 2026, 5:58pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/2 "2026-03-25T17:58:57Z")

</div>

The error there is:

```julia-auto
exception = RequestError: schannel: CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT while requesting https://pkg. julialang.org/registries

```

(please copy-paste text as text instead of posting pictures; text is immediately searchable and findable by others)

Version 1.10.11 includes an update to the CA certificate store. I don’t have a solid answer beyond that.

---

<div class="post-metadata">

**Author:** ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Post date:** [March 25, 2026, 9:05pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/3 "2026-03-25T21:05:06Z")

</div>

[Bad cert when accessing the General registry - #13 by fredrikekre](https://discourse.julialang.org/t/bad-cert-when-accessing-the-general-registry/112738/13) might be relevant.

---

<div class="post-metadata">

**Author:** ![croberts](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/croberts/32/9465_2.png) [@croberts](https://discourse.julialang.org/u/croberts)\
**Post date:** [April 6, 2026, 8:57pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/4 "2026-04-06T20:57:59Z")

</div>

Were you able to solve your problem? I am having a similar problem.

---

<div class="post-metadata">

**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [April 6, 2026, 9:00pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/5 "2026-04-06T21:00:43Z")

</div>

Have you tried the letsencrypt test pages that @fredrikekre linked to above? Do they work on your system?

> [@Bad cert when accessing the General registry](https://discourse.julialang.org/t/bad-cert-when-accessing-the-general-registry/112738/13):
>
> See [Chains of Trust - Let's Encrypt](https://letsencrypt.org/certificates/) for some more details. In particular they list a couple of test pages where you can verify the theory above. For example, [https://valid-isrgrootx1.letsencrypt.org/](https://valid-isrgrootx1.letsencrypt.org/) present a valid certificate signed by ISRG Root X1 and [https://valid-isrgrootx2.letsencrypt.org/](https://valid-isrgrootx2.letsencrypt.org/) a valid cert signed by ISRG Root X2.

---

<div class="post-metadata">

**Author:** ![croberts](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/croberts/32/9465_2.png) [@croberts](https://discourse.julialang.org/u/croberts)\
**Post date:** [April 6, 2026, 9:21pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/6 "2026-04-06T21:21:34Z")

</div>

Yes, I am able to open both webpages ( [https://valid-isrgrootx2.letsencrypt.org/](https://valid-isrgrootx2.letsencrypt.org/) and [https://valid-isrgrootx1.letsencrypt.org/](https://valid-isrgrootx1.letsencrypt.org/) ) and also curl worked with both.

I am currently using Julia 1.12.4 (but I also get this error with 1.10.2 and 1.11.0).

My workplace has a corporate proxy, which has caused problems with Julia in the past. I started having this problem a week ago, but I haven’t attempted to download packages for more than a month.

Thank you for being helpful!

---

<div class="post-metadata">

**Author:** ![co1emi11er](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/co1emi11er/32/206849_2.png) [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Post date:** [April 6, 2026, 9:29pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/7 "2026-04-06T21:29:59Z")

</div>

I currently have the older 1.10 version installed and I update registry on that one and it updates it on other versions.. but once that fails, I may be out of options

---

<div class="post-metadata">

**Author:** ![croberts](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/croberts/32/9465_2.png) [@croberts](https://discourse.julialang.org/u/croberts)\
**Post date:** [May 14, 2026, 8:23pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/8 "2026-05-14T20:23:40Z")

</div>

Are you still having problems now that a month has passed? If you were able to resolve your issues, how did you do so?

---

<div class="post-metadata">

**Author:** ![co1emi11er](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/co1emi11er/32/206849_2.png) [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Post date:** [May 14, 2026, 8:40pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/9 "2026-05-14T20:40:14Z")

</div>

I tried this in the past and it didn’t work, but now it fixed all my issues. Try this (if on windows):

Powershell command: `setx JULIA_NO_VERIFY_HOSTS "pkg.julialang.org"`

---

<div class="post-metadata">

**Author:** ![croberts](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/croberts/32/9465_2.png) [@croberts](https://discourse.julialang.org/u/croberts)\
**Post date:** [May 15, 2026, 2:29pm UTC](https://discourse.julialang.org/t/registry-fails-to-download-with-certificate-error-in-1-10-11/136390/10 "2026-05-15T14:29:50Z")

</div>

Thanks, it worked