MT5 LiveUpdate fails on netcup server after 1 year without problems; MQL5 returns HTTP 403

[Norbert]

My root server, which I rent from the German provider netcup, has been running for over a year without any problems with MT5. It uses the same static IP address as before, and I have not recently changed its configuration. The server runs four MetaTrader 5 terminal instances for my own automated trading.

The problem has only existed for approximately one to two weeks. All four terminals fail when checking for the current release. Their Journals show:

LiveUpdate check for release version MQL5.
community authorization failed

The MQL5 website can no longer be accessed from the server either. I can't explain it, because nothing has changed.

The installed MT5 build (Version: 5:00 build 6230) is the same as on my private PC, where the release check succeeds and reports that the latest version is installed.

I also tested access from the server:
- DNS resolution for www.mql5.com succeeds.
- TCP port 443 is reachable on www.mql5.com and www.metatrader5.com.
- Edge browser receives “Access to www.mql5.com was denied” (HTTP 403), including in InPrivate mode.
- A normal IPv4 GET request with curl also returns HTTP 403. A HEAD request (curl -I) returns HTTP 200.
- TCP connections to download.mql5.com:443 and download.terminal.free:443 time out. Both hostnames resolve to the same two IPv4 addresses.
- Windows Defender Firewall has no enabled outbound block rules. The netcup firewall is inactive.
- Windows routes the download-host connections through Ethernet and the server’s default gateway, not through WireGuard.

Could this be an IP-related restriction, a provider/subnet restriction, or a routing issue affecting MetaQuotes’ download services? Could MetaQuotes check this and advise how to restore access? I can provide the server’s IP and further test results privately if there is an appropriate support channel. I will not post the IP publicly.

I found the MQL5 blog post “Summary: Installation Failed - Error 403 and more,” which says that the Service Desk may be able to check some cases and may request the server IP. Is there a way to submit that information privately to MetaQuotes?

Thank you in advance for your help. nob

[Michael Charles Schefe]

Norbert:

do a search of this site and you will find that mt5 has had issues with netcup for many many many years.

[Sergey Golubev]

Norbert:
My root server, which I rent from the German provider netcup

Summary: Installation Failed - Error 403 and more - blog post

More about error 443: summary post #21 and post #2

[Norbert]

Michael Charles Schefe #:
do a search of this site and you will find that mt5 has had issues with netcup for many many many years.

Sergey Golubev #:

Summary: Installation Failed - Error 403 and more - blog post

More about error 443: summary post #21 and post #2

Thanks for your replies/Danke euch beiden. Of course, I have already searched the forum extensively. However, none of that explains why my server ran without issues for over a year. Why is the IP address of the server suddenly being blocked? How can I get it unblocked? Switching the server provider is absolutely not an option due to the long-term contract. How can I contact MetaQuotes support?

Surely it cannot be MetaQuotes' goal to drive away long-standing customers who have done absolutely nothing wrong in such a drastic manner?

[Norbert]

Unfortunately, the problem remains unresolved. My server provider has checked everything, and the issue clearly lies with MetaQuotes.

I ask again: How can I contact MetaQuotes support to have my server IP unblocked? My root server has its own dedicated, static IP address.

[Michael Charles Schefe]

Norbert #:

Unfortunately, the problem remains unresolved. My server provider has checked everything, and the issue clearly lies with MetaQuotes.

I ask again: How can I contact MetaQuotes support to have my server IP unblocked? My root server has its own dedicated, static IP address.

at bottom of every page on this site is link "Contacts and Requests". or on your profile page is link on the left "Service Desk". However i doubt that they will unblock it, i recommend that you do not mention the name of the vps provider, or they wont even try.

[Sergey Golubev]

Norbert #:
I ask again: How can I contact MetaQuotes support to have my server IP unblocked? My root server has its own dedicated, static IP address.

One more time - using this summary blog post - you can check about IP of your VPS provider: is it blocked or not); because MetaQuotes are blocking the providers which can not be unblocked for example):

Summary: Installation Failed - Error 403 and more - blog post

[Norbert]

Sergey Golubev #:
One more time - using this summary blog post - you can check about IP of your VPS provider: is it blocked or not); because MetaQuotes are blocking the providers which can not be unblocked for example):

Summary: Installation Failed - Error 403 and more - blog post

As I have already written, I am familiar with that blog post and have already checked and worked through everything. The issue cannot simply be down to my server provider; after all, my server—which has its own static IP—worked without problems for a year. The server provider has not changed.

[Norbert]

Michael Charles Schefe #:
at bottom of every page on this site is link "Contacts and Requests". or on your profile page is link on the left "Service Desk". However i doubt that they will unblock it, i recommend that you do not mention the name of the vps provider, or they wont even try.

I’ve already tried that. You end up with a chatbot that doesn't allow for custom questions. Please try it yourself, and you’ll see what I mean. I couldn't find a way to create a support ticket. Or am I missing something? For technical questions, you get referred to this forum. Is there a help desk representative here who can assist me and resolve the issue?

[Sergey Golubev]

Norbert #:
As I have already written, I am familiar with that blog post and have already checked and worked through everything. The issue cannot simply be down to my server provider; after all, my server—which has its own static IP—worked without problems for a year. The server provider has not changed.

Check your IP with https://www.iplocation.net/ip-lookup  
and after that - ckeck about the following: is it prohibited by your VPS to use VPS provider or not.
If please use search.

[Michael Charles Schefe]

Norbert #:
I’ve already tried that. You end up with a chatbot that doesn't allow for custom questions. Please try it yourself, and you’ll see what I mean. I couldn't find a way to create a support ticket. Or am I missing something? For technical questions, you get referred to this forum. Is there a help desk representative here who can assist me and resolve the issue?

i have done so -- multiple times. And i do not understand how so many users can have issues with it. There are also multiple threads on the site with screen by screen plays -- how to answer the questions, and yet, there are still so many users who keep opening threads asking how to contact the service desk.