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<title>Step 1.5: Checking the expiration date of the serial number</title>
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<h1>Step 1.5: Checking the expiration date of the serial number</h1>
<p>Now put a new line to the ini-file in the following format: ExpDate=YYYYMMDD. For example:</p>
<pre class="code">ExpDate=20000101
</pre>
<p>The date specified in this line must be already passed, that is, the maximum date is yesterday. When we run the program, we should see the following:</p>
<pre class="code">state = SERIAL_STATE_FLAG_DATE_EXPIRED
please register!
</pre>
<p>Now let's get some more information before the "please register" message is shown and the program exists:</p>
<pre class="code">if (res)
{
VMProtectSerialNumberData sd = {0};
VMProtectGetSerialNumberData(&sd, sizeof(sd));
printf("exp. date: y = %d, m = %d, d = %d\n", sd.dtExpire.wYear, sd.dtExpire.bMonth, sd.dtExpire.bDay);
printf("please register!\n");
return 0;
}
</pre>
<p>The second run of the app now provides more details to us:</p>
<pre class="code">state = SERIAL_STATE_FLAG_DATE_EXPIRED
exp. date: y = 2000, m = 1, d = 1
please register!
</pre>
<p>Ok, now remove the ExpDate=... line from the ini-file, so it will not influence everything else we are to do.</p><br />
<a href="step16_time.htm">Next step</a>
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