Public key certificate - also digital certificate or identity certificate. A document that contains information about a user's or machine's identity, matched up with its public key, and is validated and cryptographically signed by a certificate authority. Certificates are intended to provide a ...

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7 views

What happens when certificates created by Acrobat expire?

If I create a certificate using Adobe Acrobat to encrypt PDFs, I notice that the certificate has an expiration date (5 years after its creation date) when looking them up on Certmgr. My question is, ...
2
votes
1answer
20k views

How to fix certificates verification creating a VPN (OpenVPN)?

Ok, I'll explain what I did... and at the end is the queston. THank you! To set up my VPN I installed OpenVPN in server and client machines. On server I configured the cert Authority in the file ...
-1
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2answers
98 views

Proxy causing www.google.com to report as having an invalid security certificate

I tried to use google today (using google chrome), and when i search, it shows me the search page, but the top header says that im not signed in, although I am .. tried to sign in again, and same ...
3
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1answer
62 views

Software update kb3136000 has not been installed

I'd like to install manually .Net Frame Work 4.6.1 security update that release most recently. When I try to install that update I gave this error: Software update kb3136000 has not been ...
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1answer
3k views

Roundcube, php 5.6 and self-signed certificates

I am currently porting one of my servers to another. That server is running Postfix + Dovecot using a self-signed certificate. My web-frontend used to be roundcube. Now is the problem, that the new ...
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1answer
9 views

Organizational Email Footer in O365, but with S/MIME Certificates

My organization uses S/MIME certificates to digitally sign and encrypt emails. We would like to add a disclaimer at the bottom of our emails, which can be done via the mail flow settings in Office ...
3
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2answers
3k views

Outlook 2013, multiple email accounts and encrypted email: Only last S/MIME settings used

I have multiple email accounts properly setup in Outlook 2013 (can send/receive fine otherwise). Lets say they are: user1@domain1.com user2@domain2.com user3@domain3.com All belong to me and I have ...
15
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2answers
47k views

What are the Windows system certificate stores?

When adding certificates, stls, ctls and crls to the system, I can choose the certificate store. I have found only references to the "my" and "root" stores so far. Are there any other?
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1answer
25 views

Security risks of compromise Apple distribution certificate [closed]

What are the security consequences of a compromised Distribution Certificate from the Apple iOS Developer Account? From what I understand.... people cannot install apps signed with these ...
0
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1answer
68 views

How to enable IE 10 to accept sha-1 ssl certificate?

I have a server certificate issued by a CA that uses sha-1. Chrome (latest) allowed me to access a server that imports the server cert but IE 10 didn't. Is there way that I could configure IE 10 to ...
1
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1answer
106 views

Find and delete duplicate root certificates

We are in a disconnected domain and have just implemented updated root certificates via group policy. I have found now though, that there are a number of duplicated root certificates in the users ...
0
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2answers
88 views

Update certificate in Outlook contacts

How can I update an encryption security in Outlook contacts? I got an email signed with an updated certificate by someone who is already in my contacts with an expired certificate. If I REPLY to ...
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3answers
40k views

View / install certificates for local machine store on Windows 7

On Windows 7 (Windows 7 Professional x64), how can I view and install certificates in the local machine store? The certmgr.msc plugin allows me to view certificates installed in the current ...
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0answers
33 views

Is TPM 2.0 required by browsers to visit sites that use only SHA-2 certificates?

SHA-2 support seems to have been added with TPM 2.0. Consequently, is TPM 2.0 required by browsers to visit sites that use only SHA-2 certificates? If not, is there some official documentation ...
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0answers
129 views

Downloaded package (xxx.pkg) can't be opened because it is from an unidentified developer

I'm the developer of an application which clients can download from my website (lightroomstatistics dot com). The first time the clients or I, on a different computer, start the downloaded installer I ...
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0answers
14 views

SSL/TLS validation errors on requests

Every single website I try to access is giving me a certificate error. I've tried checking the system's time, but it's correct. Thanks.
4
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4answers
20k views

How to install a CA key (self signed SSL) on ubuntu? [duplicate]

I have a bunch of machines that need to fetch https: off a server (or collection of servers). I'm operating a CA and self-signing the certificates on the server(s). The client machines are running ...
1
vote
2answers
49 views

How to connect securely using RDP when connecting w/IP

I have a Windows 8.1 machine that I am trying to connect to a remote server via RDP using IP address. Issue lies with connection type - I'm using IP address and certificate name is DNS name. So ...
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votes
2answers
62 views

SSL certificate warning error for a website running on http and https

We have the website which is running on both http(80) and https (443). We purchased the SSL certificate and installed. It is working well for the web sites running only on https. If we access the ...
19
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4answers
18k views

What is the difference between a certificate and a key with respect to SSL?

Whenever I try to understand anything about SSL I always have a hard time keeping track of what "key" and "certificate" refer to. I fear many people use them incorrectly or interchangeably. Is there ...
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0answers
21 views

How do i encrypt PDF with certificate?

I want to encrypt a pdf document with certificate so that i can have full access and all other users just printing access. I have been trying to create a certificate adjusting permissions and ...
0
votes
0answers
55 views

Invalid certificate popup associated with Outlook meeting reminder

I have a meeting in Outlook (that I do not own, I am just an invitee), and every other week when it occurs I get this popup: It comes up right after the reminder. Sometimes it pops up multiple ...
0
votes
1answer
58 views

OSX wants to make changes. Type an administrator's name and password… Won't go away

I recently needed to add some SSL certificates to my Mac (OSX 10.10.5) in order connect to a remote service. The certificates are needed for 2 factor authentication. I have full Admin rights in OSX. ...
5
votes
3answers
3k views

Mutt will not let me save an SSL certificate

I have just set up Mutt to connect to my firm's IMAP and SMTP server. Everything works; but when I launch mutt, I get a warning about the certificate, and am given the option to: (r)eject, accept ...
3
votes
1answer
129 views

After upgrading to Mac OS X 10.11.4, I start seeing reports that certificates are invalid

I upgraded from Mac OS X 10.11.3 to 10.11.4 this week. After that, I found that, if I open some software e.g. Xcode simulator download page, or HMA client (a VPN Client), it reports some info: invalid ...
0
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1answer
166 views

How to create SSL certificate with multiple DNS entries, signed with my own CA certificate

I need help creating SSL certificate with multiple subjectAltNames, signed with my own selfbrewed CA certificate. What I need: I'm on OSX 10.10.5 I have myCA.cer which I use to sign another SSL ...
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0answers
38 views

Restore “Back up your file encryption certificate and key” window (prompt) in Windows 7

How can I make this prompt to appear every time a new encryption certificate is created since last time I pressed "Never Backup"?
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votes
1answer
32 views

Let'sEncrypt SSL Doesn't Work

I've got a debian 8 server installed with ispconfig 3, apache2, mysql and php. And recently I've installed (tried) letsencrypt SSL certificates for my website.com. I did everything as tutorial said, ...
2
votes
5answers
5k views

Certificate not trusted over Win7 to Win7 Remote Desktop connection

I'm experiencing a certificate issue while connecting two Windows 7 machines together via Remote Desktop. I have installed the certificate, but I'm getting a message that says the cert is not trusted. ...
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1answer
39 views

How to make “Permanently store this exception” checkbox active?

I'm trying to connect to a website which uses a self-signed certificate. Firefox tells me that my connection is not secure and on clicking Advanced button I can find Add Exception... button, clicking ...
0
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0answers
13 views

MS Certificate Web Enrollment authentication between domains

I'm trying to set up the Certificate Enrollment Web Services to give autoenrollment to some clients. The issue is the clients are on a separate domain to the CA. I see the CES/CEP allows three options ...
4
votes
0answers
165 views

Edge “security certificate is not secure” since bash installation

Description I am running Windows 10 Insider - Build 14316. I managed to reproduce the issue by reverting the update and try it again to see exactly when the problem occurs. So, I activated Ubuntu On ...
1
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0answers
15 views

Extract and Trust certificate via command line in windows

I am trying to setup a printer via command line in windows. So far I everything is working well except I don't know of any way to extract .cer from .cat via command line. I could extract it via ...
1
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0answers
29 views

“Copy to File…” button is disabled in certificate dialog

In the certificate details dialog, the button to save it is disabled. Why is that? I remember it working before. What I did was: open a new window of IE (best to close all others first) to visit a ...
0
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0answers
51 views

(Setting up SSL) invalid number of arguments in “ssl_certificate” directive in /etc/nginx/nginx.conf

I am trying to setup SSL on my server. I purchased my SSL certificate from Comodo. I am following the tutorial they have made here: ...
0
votes
1answer
65 views

Browser (any) on Windows 7 loads bad (localhost) https certificate

On Windows 7 in Chrome, but also in any other browser, for one particular (external) website a bad HTTPS certificate is loaded. When I open the certificate it says that Windows does not have enough ...
2
votes
3answers
3k views

How do add a certificate from a self-signed server to trusted certificates in Chrome?

I have a dedicated server with a wiki and want to secure it so nobody can read my articles by sniffing my pages. I do not want to pay for a valid certificate so I created a self-signed certificate. ...
0
votes
1answer
46 views

Firefox doesn't ask me for a certificate when visiting a site that needs one

I use Firefox 44.0.2 on a Linux Xubuntu system. I'm trying to access a company website that requires a certificate. I can confirm I have the correct certificate in ...
0
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0answers
19 views

Nylas N1 ignore self signed cert

I am trying to use the N1 mail client at my school. However, when I try to connect, I get the error "self signed certificate in certificate chain" I know the cert is self signed, how do I make N1 ...
0
votes
2answers
45 views

Apache certificate chain is not being sent

Good day! I've searched google high and low. Goodness, I've never gone past page 2 of search results before! But this one stumps me. I've got a website that I am securing with a certificate signed ...
1
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1answer
2k views

How to add Let's Encrypt to the Java allowed certificates?

I have recently switched to Let's Encrypt Private Beta for several of my domain names, and as a consequence several of my Java programs have stopped working because the certificate is not in the trust ...
1
vote
1answer
141 views

Where are certificate private keys stored in Windows 7?

Using the certmgr.msc utility, I can access the windows cert store, but I still can't figure out where Windows stores the private keys. For example for a given certificate, Windows tells me that ...
1
vote
2answers
34 views

How can I renew my certificate authority signing key?

I am a noob considering certificate authorities. I followed this article a while ago to setup my own certificate authority and with its help setup my own freelan VPN network: ...
3
votes
1answer
321 views

Where to get root SSL certificates for Opera 12.17?

Approximately six months ago several web sites began to lose their styles gradually and finally some of them entirely stopped working in Opera although they work in other browsers. All this seemed to ...
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0answers
12 views

Why might Windows EFS not list a certificate from Trusted People?

I have an encrypted file. I've added a public-key-only certificate (exported from another computer that had the private) to all of the following: Local Computer\Personal\Certificates Local ...
0
votes
1answer
731 views

Can I extract a certificate private key from the windows certificate store in a disk image?

After re-installing Windows 7 I notice that I seem to have failed to export the private key for one of my client certificates (for Internet Explorer use). When viewing the certificate in IE, it ...
2
votes
1answer
153 views

How to always allow insecure connection for a certain url in chrome?

For internal usage, we have a system using a self-signed insecure SSL certificate, making Chrome warn me on each session: Your connection is not private Attackers might be trying to steal ...
0
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0answers
20 views

Apache on Windows using CA Certificates

I have been issued by our CA a new cert and have the CA cert and my key that I used during the CSR for generation. I've never setup SSL in apache before and more or less copying from other examples ...
0
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0answers
67 views

Java out of box cacerts certificate are SHA1 is there one with SHA2

Java/JDK/JRE they have a keystore cacerts under lib\Security folder as shown below Java comes with around 93 certificates out of box, These are not self-signed these are supplied by java itself ...
41
votes
1answer
44k views

How do I view the contents of a PFX file on Windows?

I have a PFX certificate file on my machine and I'd like to view the details before importing it. (The import utility doesn't actually tell you what the certificate is!). How do I view the details ...