Hello, as the title says I am receiving error: NET::ERR_CERT_ Here's what I can tell you: I am an expat living in Indonesia. I know there are some govt blocks but Dropbox is not one of them and I can still access it on my phone no problem, just not my PC. I can use a VPN and get past govt blocks, but still not able to access dropbox. What I've tried so far: Tried using a VPN (and not) Updating my date and time Turning off my firewall and antivirus updating my OS and browser Cleared HSTS in Chrome settings Cleared cache and everything else relevant since "all time" Tried using a different browser (Edge, Opera and Chrome) Tried connecting to my mobile hotspot instead of my home wifi System: Windows 10 Home, 64-bit OS, HP Omen I believe that's about it. If you can help me, as I said, I am truly desperate. Thank you!

Whenever you encounter this error, configure the primary DNS statically as 1.1.1.1 This address uses DNSSEC which provides adequate security for the connection to the internet. Hope this helps!

AFTER fully removing McAfee and any other antivirus other than Windows Defender then run these: Windows Key + X - Command Prompt (Admin) OR Windows PowerShell (Admin) OR Start - type in the Search box --> CMD Find at top of list and Right Click on it - Run as Admin. (Run these one line at a time.) How to Run SFC Command to Repair System Files in Windows 10 < -- see Option 5 http://www.tenforums.com/tutorials/2895-sfc-com... SFC /scannow Note if that shows uncorrected errors - continue regardless. When that completes run these : DISM /Online /Cleanup-Image /CheckHealth DISM /online /cleanup-image /scanhealth DISM /online /cleanup-image /restorehealth Note if that shows any uncorrected errors - continue regardless. Then restart the computer. After running DISM restart the computer then run SFC /scannow again. and restart the computer. Fix Windows Update errors by using the DISM or System Update Readiness tool https://support.microsoft.com/en-us/help/947821... How to Repair Windows 10 Image using DISM http://www.tenforums.com/tutorials/7808-dism-re... ======= If needed : A Repair Installation which allows you to keep the programs and data though redundant backups are always a good idea. How to: perform a repair upgrade using the Windows 10 ISO file http://answers.microsoft.com/en-us/insider/wiki... Rob Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it. Please let us know the results and if you need further assistance. Feedback definitely helps us help all.

McAfee will have effects as long as it is installed so you need to fully uninstall it. Use only Windows Defender which in Windows 8/8.1 & 10 is a full antivirus. How to uninstall McAfee Windows security software using the Consumer Products Removal tool <a href="https://service.mcafee.com/webcenter/portal/cp/home/articleview?locale=en-US&articleId=TS101331&fromSearch=true&platform=&_afrLoop=1310321008266208#!%40%40%3F_afrLoop%3D1310321008266208%26articleId%3DTS101331%26centerWidth%3D100%2525%26fromSearch%3Dtrue%26leftWidth%3D0%2525%26locale%3Den-US%26platform%3D%26rightWidth%3D0%2525%26showFooter%3Dfalse%26showHeader%3Dfalse%26_adf.ctrl-state%3Dlebzqc6om_98" rel="ugc nofollow">https://service.mcafee.com/webcenter/portal/cp/... List of anti-malware program cleanup/uninstall tools http://answers.microsoft.com/en-us/protect/wiki... Eset - Remove Eset and many other makers/types of antivirus such as McAfee, Symantec/Norton, Avast, and others - also removes many other programs https://support.eset.com/en/kb3527-eset-av-remo... Eset - AV Remover - List of removable applications and instructions to run the Eset AV Remover tool program https://support.eset.com/en/kb3527-eset-av-remo... Here to help, Rob Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it. Please let us know the results and if you need further assistance. Feedback definitely helps us help all.

If you have a 3rd party antivirus go to its make and get their removal software. All you need is Windows Security and Malwarebytes. . Also; The best security sits between the chair and the keyboard. Watch what and where you click. If you do not know what is there do not click on "Click here". If you get an email that sates it is from your provider look at the address of the sender. If it has a couple of letters at the end they are probably the foreign country and that is not where your provider is located. When downloading programs do it from the maker not anyone else and do not allow any extra items to be included.

Hi Blinick, I am Rob, an independent and a 15 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis. Please remember as independents we are not responsible for the development of Windows or the computer hardware and drivers. If you will work with me I will be here to help until the issue is resolved. Are you using any 3rd party antivirus or security programs? Those can cause this issue. How to Fix the “NET::ERR_CERT_AUTHORITY_INVALID” Error [MiniTool News] https://www.minitool.com/news/net-err-cert-auth... Here to help, Rob Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it. Please let us know the results and if you need further assistance. Feedback definitely helps us help all.

NET::ERR_CERT_AUTHORITY_INVALID -- 3 hours of troubleshooting futile. Please help!

Anonymous

Hello, as the title says I am receiving error: NET::ERR_CERT_

Here's what I can tell you: I am an expat living in Indonesia. I know there are some govt blocks but Dropbox is not one of them and I can still access it on my phone no problem, just not my PC. I can use a VPN and get past govt blocks, but still not able to access dropbox.

What I've tried so far:

Tried using a VPN (and not)
Updating my date and time
Turning off my firewall and antivirus
updating my OS and browser
Cleared HSTS in Chrome settings
Cleared cache and everything else relevant since "all time"
Tried using a different browser (Edge, Opera and Chrome)
Tried connecting to my mobile hotspot instead of my home wifi

System: Windows 10 Home, 64-bit OS, HP Omen

I believe that's about it. If you can help me, as I said, I am truly desperate.

Thank you!

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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21 answers

Anonymous

2021-03-02T19:34:07+00:00

Whenever you encounter this error, configure the primary DNS statically as 1.1.1.1

This address uses DNSSEC which provides adequate security for the connection to the internet.

Hope this helps!
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Anonymous

2020-11-22T21:16:22+00:00

AFTER fully removing McAfee and any other antivirus other than Windows Defender then run these:

Windows Key + X - Command Prompt (Admin) OR Windows PowerShell (Admin)

OR Start - type in the Search box --> CMD Find at top of list and Right Click on it - Run as Admin.

(Run these one line at a time.)

How to Run SFC Command to Repair System Files in Windows 10 < -- see Option 5

http://www.tenforums.com/tutorials/2895-sfc-com...

SFC /scannow

Note if that shows uncorrected errors - continue regardless.

When that completes run these :

DISM /Online /Cleanup-Image /CheckHealth

DISM /online /cleanup-image /scanhealth

DISM /online /cleanup-image /restorehealth

Note if that shows any uncorrected errors - continue regardless.

Then restart the computer.

After running DISM restart the computer then run SFC /scannow again. and restart the computer.

Fix Windows Update errors by using the DISM or System Update Readiness tool

https://support.microsoft.com/en-us/help/947821...

How to Repair Windows 10 Image using DISM

http://www.tenforums.com/tutorials/7808-dism-re...

=======

If needed :

A Repair Installation which allows you to keep the programs and data though redundant backups are always a good idea.

How to: perform a repair upgrade using the Windows 10 ISO file

http://answers.microsoft.com/en-us/insider/wiki...

Rob

Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Please let us know the results and if you need further assistance. Feedback definitely helps us help all.
Was this answer helpful?

1 person found this answer helpful.

0 comments No comments
Anonymous

2020-11-22T21:09:34+00:00

McAfee will have effects as long as it is installed so you need to fully uninstall it.

Use only Windows Defender which in Windows 8/8.1 & 10 is a full antivirus.

How to uninstall McAfee Windows security software using the Consumer Products Removal tool

https://service.mcafee.com/webcenter/portal/cp/...

List of anti-malware program cleanup/uninstall tools

http://answers.microsoft.com/en-us/protect/wiki...

Eset - Remove Eset and many other makers/types of antivirus such as McAfee, Symantec/Norton, Avast, and others - also removes many other programs

https://support.eset.com/en/kb3527-eset-av-remo...

Eset - AV Remover - List of removable applications and instructions to run the Eset AV Remover tool program

https://support.eset.com/en/kb3527-eset-av-remo...

Here to help,

Rob

Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Please let us know the results and if you need further assistance. Feedback definitely helps us help all.
Was this answer helpful?

1 person found this answer helpful.

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Anonymous

2020-11-22T06:29:43+00:00

If you have a 3rd party antivirus go to its make and get their removal software. All you need is Windows Security and Malwarebytes.

.

Also;

The best security sits between the chair and the keyboard. Watch what and where you click. If you do not know what is there do not click on "Click here". If you get an email that sates it is from your provider look at the address of the sender. If it has a couple of letters at the end they are probably the foreign country and that is not where your provider is located. When downloading programs do it from the maker not anyone else and do not allow any extra items to be included.
Was this answer helpful?

1 person found this answer helpful.

0 comments No comments
Anonymous

2020-11-22T06:27:26+00:00

Hi Blinick, I am Rob, an independent and a 15 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis. Please remember as independents we are not responsible for the development of Windows or the computer hardware and drivers. If you will work with me I will be here to help until the issue is resolved.

Are you using any 3rd party antivirus or security programs? Those can cause this issue.

How to Fix the “NET::ERR_CERT_AUTHORITY_INVALID” Error [MiniTool News]

https://www.minitool.com/news/net-err-cert-auth...

Here to help,

Rob

Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Please let us know the results and if you need further assistance. Feedback definitely helps us help all.
Was this answer helpful?

1 person found this answer helpful.

0 comments No comments

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NET::ERR_CERT_AUTHORITY_INVALID -- 3 hours of troubleshooting futile. Please help!

21 answers