user6547: 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?

user120: 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


6547: <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>
 120: <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>
