# I can't authenticate on charts
**URL:** https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532
**Category:** Desktop
**Created:** [January 18, 2024, 9:34am UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532 "2024-01-18T09:34:28Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@andrea58](https://forum.navigraph.com/u/andrea58)
#### Post date: [January 18, 2024, 9:34am UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/1 "2024-01-18T09:34:28Z")
Hi,
after my mail, here my post with main.log and couple of photos to show my issues to authenticate on charts and AviTab of 738 Zibo Mod.
I did already with no results:
- reinstalled charts, simlink and FMS data manager
- checked computer time and date
- checked firewall settings (inbound connection allowed for specific app)
Ciao.
Giuseppe
[main.log](https://forum.navigraph.com/uploads/short-url/xdFNtWmP1c1lucZGfd4v2zyW7VK.log) (2.1 KB)
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### Author:  [@skysail](https://forum.navigraph.com/u/skysail)
#### Post date: [January 18, 2024, 10:49am UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/2 "2024-01-18T10:49:13Z")
Hello! Welcome to our forum!
Both the logs and the screenshots all point in one direction: network issues.
This can be caused by a multitude of things, unfortunately. You could try connecting your phone for another source of internet? If changing the internet connection does not help, please see this post:
> [@Navigraph Charts will not open](https://forum.navigraph.com/t/navigraph-charts-will-not-open/7256/4):
>
> * * *
>
> ## Network stability
>
> **Issue**
> The network is unstable. Sub-second disconnects that are not apparent when browsing cause critical communications with our servers to outright fail because the application is unable to reach the internet, alternatively being aborted “mid-flight”.
>
> **Proposed solution**
> Try to move to a more stable connection. If you’re on WiFi, see if it is possible to connect your computer using a network cable instead. If you’re already using a cable, make sure that you don’t have any loose connections anywhere.
>
> In order to exclude connectivity issues, please attempt to use the “personal hotspot” feature of your smartphone or some other source of internet.
>
> * * *
>
> ## Firewall rules
>
> **Issue**
> The firewall (either as part of your computer’s built-in/third-party anti-virus or as part of your router/modem) is blocking the connection, resulting in communication between the application being forced to a standstill due to incorrectly set up rules.
>
> **Proposed solution**
> Configure your firewall to allow traffic associated with the Navigraph Charts and Navigraph Navdata Center.
>
> * * *
>
> ## DNS Issues
>
> **Issue**
> The DNS server is either not responding at all (incorrectly configured) or contains bad/outdated records, resulting in invalid communication between application and the internet.
>
> **Proposed solution**
> Try to (re)configure your DNS server, preferably using a reliable provider such as [Google](https://developers.google.com/speed/public-dns) (`8.8.8.8` and `8.8.4.4`).
>
> * * *
>
> ## Proxies
>
> **Issue**
> Your internet connection is behind a proxy or is being intercepted. There are multiple reasons why this might be the case, here are a few examples:
>
> - You are using a work computer that has a proxy set up by default
> - You are using a proxy for personal/security reasons
> - Your anti-virus is intercepting all traffic to scan for malware
> - Your anti-virus/network security software has installed a self-signed certificate to encrypt insecure connections
> - You have tried to reverse-engineer our or someone else’s applications using reverse-proxy tools like Wireshark, Charles, and the BURP suite and then forgot to turn it off.
> - You have been infected with malware that is now actively deploying a [MITM (Man-in-the-middle) attack](https://www.rapid7.com/fundamentals/man-in-the-middle-attacks/#:~:text=Man%2Din%2Dthe%2Dmiddle%20attacks%20(MITM)%20are,the%20communication%20between%20two%20targets) towards you.
>
> **Proposed solutions**
>
> - Disable any proxies
> - Investigate if turning off any anti-virus solves the issue
> - Disable any active reverse proxies
> - Investigate if your antivirus has any features related to scanning/intercepting network traffic. If it does, try to find related settings and turn them off temporarily to see if that resolves the issue.
> - Run virus scans for the whole system. Also, run a rootkit scanner such as [this one](https://www.malwarebytes.com/antirootkit).
I find it likely that this is caused by your antivirus, a VPN or some configuration in your router. It could just as well be hardware-based (an issue with your network adapter), in which case connecting your phone should work fine!
Let me know if you have tried these instructions to no avail, and we’ll try to look further together!
Kind Regards,
Malte
---
### Author:  [@skysail](https://forum.navigraph.com/u/skysail)
#### Post date: [January 24, 2024, 12:00pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/3 "2024-01-24T12:00:10Z")
Hello again!
Just checking in, do you still have this issue?
Kind Regards,
Malte
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### Author:  [@andrea58](https://forum.navigraph.com/u/andrea58)
#### Post date: [January 24, 2024, 1:39pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/4 "2024-01-24T13:39:57Z")
Dear Mallte, just worked on it this morning following your instructions, but results always the same. In can go through in Simbrief with Navigraph credentials, simlink is working, butI cannot log in in Navigraph and transfer the charts into AviTab of Zibo mod. I need other ideas.
Thank you for your support very good as usual.
Ciao
Guuseppe
Ottieni [BlueMail per Android](https://bluemail.me)
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### Author:  [@skysail](https://forum.navigraph.com/u/skysail)
#### Post date: [January 24, 2024, 5:34pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/5 "2024-01-24T17:34:53Z")
Do you have any antivirus or firewall software installed?
---
### Author:  [@andrea58](https://forum.navigraph.com/u/andrea58)
#### Post date: [January 24, 2024, 6:49pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/6 "2024-01-24T18:49:33Z")
Yes,
Windows firewall (Windows 10) and Kaspersky antivirus
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### Author:  [@skysail](https://forum.navigraph.com/u/skysail)
#### Post date: [January 24, 2024, 7:10pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/7 "2024-01-24T19:10:50Z")
Ah! That could very well be the reason. Kaspersky has proven to cause problems in the past. Here is another ongoing case:
> [@Randomly losing my Navigraph subscription login](https://forum.navigraph.com/t/randomly-losing-my-navigraph-subscription-login/13687/20):
>
> Hello! Are you still having issues? Kaspersky does not sound like something I’d like to have installed on my computer (see allegations [here](https://en.wikipedia.org/wiki/Kaspersky_bans_and_allegations_of_Russian_government_ties)), but either way, there is a possibility that they installed a self-signed certificate or something of similar nature on your computer. That is quite common for these “internet security” apps, and it will inevitably cause problems. If you are still having these issues, please try to uninstall Kaspersky and see if that makes any difference! Not sure that t…
And there are more cases like these… it is even mentioned in my first post:
> [@Navigraph Charts will not open](https://forum.navigraph.com/t/navigraph-charts-will-not-open/7256/4):
>
> - Your anti-virus is intercepting all traffic to scan for malware
> - Your anti-virus/network security software has installed a self-signed certificate to encrypt insecure connections
Please uninstall or disable it _completely_, then try again! I am quite sure that this is where the issue lies!
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### Author:  [@andrea58](https://forum.navigraph.com/u/andrea58)
#### Post date: [January 24, 2024, 8:06pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/8 "2024-01-24T20:06:53Z")
Hi,
problem solved!! With antiverus disabled all works normally!!
Thank you again, grat service from great people!!🙂
Ciao.
Giuseppe
---
### Author:  [@skysail](https://forum.navigraph.com/u/skysail)
#### Post date: [January 24, 2024, 8:39pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/9 "2024-01-24T20:39:12Z")
That is great news!
If you want to keep Kaspersky, there is probably some settings that can be tweaked to make it not prevent normal & secure internet traffic like the one from our applications. Unfortunately, I can’t help you with that, sorry! 😅
I am happy to hear that things are now in working order though! Thanks for getting back to me so quickly with the results. I’ll mark this as solved!
Kind Regards,
Malte
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### Author:  [@system](https://forum.navigraph.com/u/system)
#### Post date: [January 26, 2024, 8:39pm UTC](https://forum.navigraph.com/t/i-cant-authenticate-on-charts/14532/10 "2024-01-26T20:39:42Z")
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