Bugs & Issues - eBlocker Open Source Forum

Threema App not working any more with eBlocker enabled

mr.bien — Thu, 03 Sep 2026 17:29:46 +0000

Hi,

I have been experiencing a problem with the Threema app (iPhone, iOS) for some time now. As a Trusted App, it worked perfectly fine for years. Since one of the latest updates, however, Threema no longer works properly.

When I try to send a message, a “?” now appears in Threema’s message status. If I deactivate eBlocker and send a message, then everything works well It then also starts sending the previously "?"-marked ones. Similarly, messages reception does not work. I receive a notification from iOS when a message is sent to me, but then I do not see any messages within Threema unless I deactivate eBlocker.

Of course I tried to snoop traffic using the manual recording of connections within eBlocker, but there is nothing recorded. I mean the window which shows the connections stays empty.

Long story short: I have no clue what happened to Threema and I cannot trace the issue using the provided functions within eBlocker.

Is there any way to debug that? Does anyone else has the same problems with that app?

Thanks in advance!

eBlocker x86 Directions Inaccuracy

e94904 — Wed, 26 Aug 2026 05:36:00 +0000

Hi there

I am not sure where to mention this but I had a bit of confusion when I was getting started. On the main eBlockerOS Download page, it mentions that OS3 is no longer being supported and getting updates. But on the page "Boot eBlockerOS directly on PC", it points to a download for OS version 3 when "Boot-Image Download" is selected. Only the x86 OS image can be found on the forum when ideally it should be on the main website. Because of this, it is slightly unclear if OS3 for x86 is still being supported or not.

Additionally, it mentions a minimum disk size of 8GB but the disk image is not quite 8GB. And since most 8GB USB's/SSD are slightly smaller than 8GB from the factory, it won't fit on a 8GB SSD. Either the disk image should be shrunken down to fit on an 8GB SSD or the directions should be updated to require a 9GB USB/SSD. Using either disk image and trying to flash on an 8GB device will fail when using Etcher.

Other than those two things, I was able to get it working so far and just testing things out.

1731

Problem with Home-Network

KalkLeiste — Tue, 23 Jun 2026 17:59:29 +0000

Hello eBlocker-Fans,

When I start my eBlocker on above named Raspi4, the eBlocker kickes away the Fritz!Box and overtakes its place - no Internet any more. If I take my PI400, the eBlocker works fine. The Raspi4 itself with Bullseye works fine but homenet crashes, if it is connected to. As a workaround i connected the raspi4 with a new eBlocker installed by an USB to Ethernet Adapter, but it doesn't work. The same Raspi4 with Bullseye, is connecting immediatly to the Internet. Is it possible to teach eBlocker (for Example by editing a config-File) to use the adapter instead of the build-in Ethernet-connection?

Regards Thomas

SHARE APP VIA EMAIL

RobF — Fri, 29 May 2026 08:09:16 +0000

To share the info of a trusted app, one can push the button shown as topic title. It used to work, but pushing the button now has no effect. Suggestion are welcome.

Best to all, Rob

eBlocker cannot reach the internet via ICMP/ping (Severe warning) What can I do?

Monadad — Mon, 18 May 2026 12:23:14 +0000

Connected via Fritzbox 5530 VM with Provider TNG Stadtnetz. Only IDV4 available. eblockerOS 4.03 with Rasperry 5, 2 MB

Unable to delete Auto Trust App entries

jbrunerwa2 — Thu, 14 May 2026 05:14:20 +0000

Hoping someone can help me figure out why I'm unable to delete entries. Reviewed the forum and haven't been able to identify a solution. Tried a reboot and also tried using FireFox instead of Safari. Get the same error. Tried single entries and different entries when trying to delete, same error.

Image attached of the error I'm receiving (mouseover provides the "413..." portion). Required information regarding my configuration listed below.

Hardware you use for running eBlockerOS
- Raspberry Pi 4B 2GB
eBlockerOS version as well as filter lists version
- 3.2.3
eBlocker network mode (auto, individual or expert)
- Automatic
eBlocker network settings (IP, mask, gateway)
- 192.168.7.166, 255.255.255.0, 192.168.7.1
Which devices runs DHCP server? Router/external, eBlocker or client fixed IP?
- Router
IPv6 disabled for client/network?
- Yes
eBlocker DNS firewall settings
- Use eBlocker as DNS (custom; pointed to Umbrella)
Client network settings (IP, mask, DNS, gateway)
- N/A
Whether eBlocker’s https integration is enabled for client
- N/A (but yes)
Client browser and OS version (i.e. FireFox 80.1 running on macOS 13.4)
- Safari 26.3.1
Additional non default Blockers enabled? (like DuckDuckGo, Consent-Blocker, custom lists etc.)
- No
HTTPS Auto Trust App enabled?
- Yes
Exact way or a link / screenshot to reproduce the issue
- See attached image
If VPN or Tor is enabled for the client in eBlocker (and which VPN provider you are using)
- N/A
Are automatic updates enabled?
- Yes

1711

eblocker Mobile Vodafone

Dino — Mon, 23 Mar 2026 17:33:57 +0000

I have a problem on my iPhone where my eBlocker Mobile VPN connects successfully since switching providers from Telekom mobile to Vodafone mobile contract but I no longer have access to the eBlocker or any of my network devices. Does Vodafone use the same address range as eBlocker Mobile? Does anyone know this issue and does anyone have a solution for me?

eBlocker with Fritzbox and fixed IP addresses

facebita — Mon, 09 Mar 2026 08:17:59 +0000

I run the DHCP server at eBlocker 3.2.3. The DHCP server at my Fritzbox 7690 v8.0.2 ist switched off.

I want to set single-digit fixed IPv4 addresses for the infrastructure devices, i.e. repeaters and LAN access points, and two-digit fixed IPv4 for stationary devices, e.g. TV, PV inverter, AppleTV, Apple HomePods etc. And for all mobile devices the DHCP server should assign the IP addresses from the three digit number range.

As far as I see, I can not assign in the GUI of eBlocker how to specifically assign a fixed IP address to a specific gadget. But in the GUI of the Fritzbox it seems to possible.

Is it the right way to assign the fixed IP addresses in the Fritzbox GUI? Or is an other approach more appropriate?

Bandwith impact using eBlocker

cooks — Wed, 28 Jan 2026 16:36:44 +0000

Hi. As I continue my testing before rolling out eBlocker fully, I came across a problem today and need advice.

In short the speedtests when using eBlocker on a client the bandwidth is impacted too much.

Testing using Windows client, https enabled, cert added to firefox where the tests are made.

Test sites speed.cloudflare.com and fast.com.

eBlocker version 4 up to date. On a VM. First 2 GB memory, increased to 3 GB (yes not a multiple of 2) but when on 2 GB the usage peaked only to 90%. Removed the firewall from the virtio NIC, I am using VirtIO NIC as is the most performant. I have tested increasing to 2 and 4 queues for this NIC. MTU is same as bridge.

For CPU it was as per the VM definition with x86-64-v2-AES but I have also tested with "Host". The host cpu is modern Ryzen 5.

Results: eBlocker enabled on client, 10 Mbps. eBlocker paused for device, 160 Mbps fast.com, 128 speed.cloudflare . ISP contract 510 Mbps.

WiFi connection on 5 GHz band (channel 116), link speed 961/1081 Mbps, 802.11ax protocol. Sec: WPA3-Personal.

This particular corner of the house doesn't get full speed despite strong signal so the question is not why not full 500 Mbps but why 10 Mbps with eBlocker, 160 Mbps without ? Of course there will be a hit from doing MiM inspection but is this 16 X impact expected? Not a complaint, only wanting to understand and if there are suggestions on what to check.

eblocker settings/dashboard not accessible after some time

rolmue — Sun, 18 Jan 2026 17:10:39 +0000

My white cube stopped working some weeks ago, so I was looking how to replace it and got an mostly unused Raspberry Pi 3 model B from a colleague.
Setting up worked fine but after some hours/a day I still can see the eblocker active in my FritzBox, but I cannot access Settings page nor Dashboard. I even connected a monitor to the Raspberry and it seems to be running and is showing me two IP addresses. Neither of them works.
When I disconnect power and connect it again. Everything works again and Settings & Dashboard are accessible, till on the next day I face the same issue again.

Any idea or recommendation how to proceed?
Thanks a lot!