# Windows 7 Chrome - NET::ERR\_CERT\_DATE\_INVALID

**URL:** https://community.letsencrypt.org/t/windows-7-chrome-net-err-cert-date-invalid/161246
**Category:** Help
**Created:** [October 1, 2021, 6:32am UTC](https://community.letsencrypt.org/t/windows-7-chrome-net-err-cert-date-invalid/161246 "2021-10-01T06:32:45Z")
**Posts on this page:** 1
**Showing post:** 48

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### Author: ![i4004](https://avatars.discourse-cdn.com/v4/letter/i/7cd45c/32.png) [@i4004](https://community.letsencrypt.org/u/i4004)
#### Post date: [October 10, 2021, 4:41pm UTC](https://community.letsencrypt.org/t/windows-7-chrome-net-err-cert-date-invalid/161246/48 "2021-10-10T16:41:42Z")

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(scrap my previous notion of "not something some obscure win7 patch can solve")

based on petercooperjr's last reply i searched for "trust store  
updates windows 7", which yields

> **[Support for urgent Trusted Root updates for Windows Root Certificate Program...](https://support.microsoft.com/en-us/topic/support-for-urgent-trusted-root-updates-for-windows-root-certificate-program-in-windows-a4ac4d6c-7c62-3b6e-dfd2-377982bf3ea5)**
>
> Discusses the update for the Windows Root Certificate Program update in Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, Windows 8, Windows RT, Windows Server 2012, Windows 7, and Windows Server 2008 R2.

and then version i need (x64):  
[https://www.microsoft.com/en-us/download/details.aspx?id=45633](https://www.microsoft.com/en-us/download/details.aspx?id=45633)

**and this fixes the issue, in both ie11 and brave browser (and all**  
**other chromium based browsers, i would imagine).**

prior to this i tried importing certificates (Thejam's reply #32 in  
this thread) to no avail (it's easy to install, just dload DER  
versions and doubleclick, as article itself doesn't mention way to  
install it on 7, it's buried in the comments).

i checked Nummer378's screens to compare with mine (with certification  
errors on IE11) and i noticed mention of BOTH X1 and X3 in  
"certfication path" tab (the screens he posted) on malfunctioning  
system, so i'm inclined to believe that on unpatched system there is a  
collision between X1 and X3 ie system doesn't know which path to take  
and in the end that means a failure to certify website.  
i don't think both can be used at same time....

this system previously had SP1 applied and 6 patches that are needed  
to install IE11 (which i needed in order to try onedrive on win7).

Nummner378:

> I have even tried a completly clean Win 7 install, installed nothing (just Chrome) - worked out of the box.

probably after windows update finished (and that probably goes for all  
your VMs too). i doubt it works with naked 7 and even SP1 alone wasn't  
enough in my case....

we didn't mention windows 8(.1): it doesn't have this issue, as tried  
inside my VM.

job done.

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_[View the full topic](https://community.letsencrypt.org/t/windows-7-chrome-net-err-cert-date-invalid/161246)._