<p>The miner you are using does not support the <a href="https://en.bitcoin.it/wiki/Stratum">stratum protocol</a>. Instead you must use a pool that uses the old and now obsolete <a href="https://en.bitcoin.it/wiki/Getwork">getwork protocol</a></p>

<p>If I see it correctly BTCGuild still offers the getwork access with the following URL:</p>

<pre><code>minerd.exe -o http://btcguild.com:8332 -u username_1 -p password -a sha256d -R 2
</code></pre>

CC BY-SA 3.0
2013-08-29T09:33:39.487Z
Thanks, it's working now.
I'm new to bitcoin, didn't know anything about protocols.
I was just curious, but my CPU only can produce 7MH/s, and as I know that's not much.
tamas.pflanzner
CC BY-SA 3.0
2015-09-23T23:00:31.657Z
Unfortunately, BTCGuild is closing down.
Vassilis Papanikolaou
CC BY-SA 3.0
2013-08-28T20:51:19.197Z
2013-08-28T20:51:19.197Z
cdecker
<p>When I run the following command:</p>

<pre><code>minerd.exe -o http://eu-stratum.btcguild.com:3333 -u username_1 -p password -a sha256d -R 2
</code></pre>

<p>I get this:</p>

<pre><code>2 miner threads started, using 'sha256d' algorithm.
Binding thread 0 to cpu 0
Binding thread 1 to cpu 1
HTTP request failed: Empty reply from server
json_rpc_call failed, retry after 2 seconds
</code></pre>

<p>How can I solve this problem?</p>

<miner-configuration><getwork><minerd>
Cpuminer problem: empty reply from server
tamas.pflanzner
# Cpuminer problem: empty reply from server

(Asked by: username_0 on 2013-08-28)

When I run the following command:
minerd.exe -o http://eu-stratum.btcguild.com:3333 -u username_1 -p password -a sha256d -R 2

I get this:
2 miner threads started, using 'sha256d' algorithm.
Binding thread 0 to cpu 0
Binding thread 1 to cpu 1
HTTP request failed: Empty reply from server
json_rpc_call failed, retry after 2 seconds

How can I solve this problem?

**Tags:** miner-configuration, getwork, minerd


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## 1 answers

### Answer by username_1 on 2013-08-28. Score: 5 | Accepted answer

The miner you are using does not support the stratum protocol. Instead you must use a pool that uses the old and now obsolete getwork protocol
If I see it correctly BTCGuild still offers the getwork access with the following URL:
minerd.exe -o http://btcguild.com:8332 -u username_1 -p password -a sha256d -R 2

> **Comments:**
> **username_0**: Thanks, it's working now. I'm new to bitcoin, didn't know anything about protocols. I was just curious, but my CPU only can produce 7MH/s, and as I know that's not much.  
> **username_2**: Unfortunately, BTCGuild is closing down.  

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