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	<h1 class="topictitle1">Add an on-access exclusion</h1>

	<div>
		<div class="section" id="task_6A3D71B11C8F46CBA603F9A6F9714110__context_78AF77F27D31406588EDAC7548EFAA88"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__context_78AF77F27D31406588EDAC7548EFAA88"><!-- --></a><p>You can exclude files, folders, or volumes from on-access scanning. For example, you might want to exclude:</p>
<a name="task_6A3D71B11C8F46CBA603F9A6F9714110__ul_B11D27C720604EFB91EFBF3D52B0A620"><!-- --></a><ul id="task_6A3D71B11C8F46CBA603F9A6F9714110__ul_B11D27C720604EFB91EFBF3D52B0A620"><li id="task_6A3D71B11C8F46CBA603F9A6F9714110__li_AC09406C93C740EC970029AE23C59F6F"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__li_AC09406C93C740EC970029AE23C59F6F"><!-- --></a>Files that are large and therefore take a long time to scan</li>
<li id="task_6A3D71B11C8F46CBA603F9A6F9714110__li_EF995EE4D28D4CABB52A10EC7D2832FB"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__li_EF995EE4D28D4CABB52A10EC7D2832FB"><!-- --></a>Files that cause a scanning error</li>
<li id="task_6A3D71B11C8F46CBA603F9A6F9714110__li_0612EBF0312E45C08296441578E3BEAE"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__li_0612EBF0312E45C08296441578E3BEAE"><!-- --></a>Files that cause a false-positive</li>
<li id="task_6A3D71B11C8F46CBA603F9A6F9714110__li_32B68FFDCDE948F096292F630C8C800A"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__li_32B68FFDCDE948F096292F630C8C800A"><!-- --></a>Backup volumes because the files that are stored on them are scanned when they’re backed up anyway</li>
</ul>
<div class="important"><span class="importanttitle">Important:</span> Excluding files, folders, or volumes from scanning reduces your protection against threats.</div>
<p>To add an on-access exclusion:</p>
</div>

		<a name="task_6A3D71B11C8F46CBA603F9A6F9714110__steps_CAF89B22279C4F7B8644F1D20688CFB1"><!-- --></a><ol id="task_6A3D71B11C8F46CBA603F9A6F9714110__steps_CAF89B22279C4F7B8644F1D20688CFB1">
			<li class="stepexpand" id="task_6A3D71B11C8F46CBA603F9A6F9714110__step_cf_12151058730243"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__step_cf_12151058730243"><!-- --></a><span>Choose <span class="menucascade">
      <span class="uicontrol">Sophos Anti-Virus</span>
       &gt; <span class="uicontrol">Preferences</span>
     </span>.</span></li>
<li class="stepexpand" id="task_6A3D71B11C8F46CBA603F9A6F9714110__step_022FCC6AED414873B35F3E937302AA6E"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__step_022FCC6AED414873B35F3E937302AA6E"><!-- --></a><span>Click <span class="uicontrol">On-access Scanning</span>.</span></li>
<li class="stepexpand" id="task_6A3D71B11C8F46CBA603F9A6F9714110__step_1917745655DF47CAB28943DFA0B17326"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__step_1917745655DF47CAB28943DFA0B17326"><!-- --></a><span>If some settings are dimmed, click the lock icon and type an administrator name and password.</span></li>
<li class="stepexpand" id="task_6A3D71B11C8F46CBA603F9A6F9714110__step_0DF81C18F03D4AD18B64F196BD762D3E"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__step_0DF81C18F03D4AD18B64F196BD762D3E"><!-- --></a><span>Click <span class="uicontrol">Excluded Items</span>.</span>
				</li>
<li class="stepexpand" id="task_6A3D71B11C8F46CBA603F9A6F9714110__step_66E84C58972742A9A17C1051149FC9AC"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__step_66E84C58972742A9A17C1051149FC9AC"><!-- --></a><span>Do one of the following:</span><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__choices_B2A53080B1474F188E29F69BB55FBAC1"><!-- --></a><ul id="task_6A3D71B11C8F46CBA603F9A6F9714110__choices_B2A53080B1474F188E29F69BB55FBAC1"><li id="task_6A3D71B11C8F46CBA603F9A6F9714110__choice_B6192518FCEA43AA8124F00547C274FB"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__choice_B6192518FCEA43AA8124F00547C274FB"><!-- --></a>Drag the item(s) to be excluded to the list of excluded items.</li>
<li id="task_6A3D71B11C8F46CBA603F9A6F9714110__choice_0EE040F2A273420989DEC3A733FEA5E7"><a name="task_6A3D71B11C8F46CBA603F9A6F9714110__choice_0EE040F2A273420989DEC3A733FEA5E7"><!-- --></a>Click 
<span class="uicontrol">Add</span> (+)
 and choose the item(s) to be excluded from the dialog.</li>
</ul>

				 For information about specifying which items are excluded, see <a href="../references/Exclusion_rules.html#reference_788D5ABF2F564748A78C7A65EACF7C91" title="">Exclusion rules</a>.</li>

		</ol>

	</div>

<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="../concepts/Configuring_on-access_scanning.html" title="">Configuring on-access scanning</a></div>
</div>
</div>

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