https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92871#M42562 <DIV style="position: absolute; display: none; z-index: 16777271;"></DIV> Hi Neeraj,<BR /><BR /> <P>This error is not specific to Blue Prism, other than it involves&nbsp;a .NET Framework call to an MS Office product.</P> <P>As this error is generic there is no single solution. However, to aid in your investigation, we recommend you review the following external articles:</P> <UL> <LI><A href="https://social.msdn.microsoft.com/Forums/office/en-US/62d1d6ac-e7e6-4a58-8072-a7e4b9a489dd/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-used-when-opening-project?forum=vsx" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Microsoft - c#: <G class="gr_ gr_22 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" id="22" data-gr-id="22">Excel :</G> COM object that has been separated from its underlying RCW cannot be used</A></LI> <LI><A href="https://stackoverflow.com/questions/2260990/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-used" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Stackoverflow - COM object that has been separated from its underlying RCW cannot be used</A></LI> <LI><A href="https://bytes.com/topic/visual-basic-net/answers/563018-com-object-has-been-separated-its-underlying-rcw" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Bytes&nbsp;- object-has-been-separated-its-underlying-<G class="gr_ gr_20 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" id="20" data-gr-id="20">rcw</G></A></LI> <LI><A href="http://www.dotnetfunda.com/forums/show/14354/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-u" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">.netFunda - COM object that has been separated from its underlying RCW cannot be used. in C#.net [Resolved]</A></LI> </UL> <BR />I hope this helps.<BR /><BR />------------------------------<BR />Hossein Azimi<BR />Customer Support Engineer, APAC<BR />Blue Prism<BR />Australia/Sydney<BR />------------------------------<BR /> Sat, 28 Sep 2019 01:47:00 GMT hossein.azimi 2019-09-28T01:47:00Z https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92870#M42561 Hi All,<BR /><BR />Do any one have idea why this error at close instance of excel is all about.<BR /><BR />system.runtime.interloopservices.invalidComObjectException: COM object that has been separated from its underlying RCW cannot be used.<BR /><BR />any help would be great<BR /><BR />------------------------------<BR />Neeraj Shekhar Rajput<BR />Developer<BR />Genpact India<BR />Asia/Kolkata<BR />------------------------------<BR /> Fri, 27 Sep 2019 09:59:00 GMT https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92870#M42561 NeerajShekhar_R 2019-09-27T09:59:00Z https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92871#M42562 <DIV style="position: absolute; display: none; z-index: 16777271;"></DIV> Hi Neeraj,<BR /><BR /> <P>This error is not specific to Blue Prism, other than it involves&nbsp;a .NET Framework call to an MS Office product.</P> <P>As this error is generic there is no single solution. However, to aid in your investigation, we recommend you review the following external articles:</P> <UL> <LI><A href="https://social.msdn.microsoft.com/Forums/office/en-US/62d1d6ac-e7e6-4a58-8072-a7e4b9a489dd/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-used-when-opening-project?forum=vsx" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Microsoft - c#: <G class="gr_ gr_22 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" id="22" data-gr-id="22">Excel :</G> COM object that has been separated from its underlying RCW cannot be used</A></LI> <LI><A href="https://stackoverflow.com/questions/2260990/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-used" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Stackoverflow - COM object that has been separated from its underlying RCW cannot be used</A></LI> <LI><A href="https://bytes.com/topic/visual-basic-net/answers/563018-com-object-has-been-separated-its-underlying-rcw" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">Bytes&nbsp;- object-has-been-separated-its-underlying-<G class="gr_ gr_20 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" id="20" data-gr-id="20">rcw</G></A></LI> <LI><A href="http://www.dotnetfunda.com/forums/show/14354/com-object-that-has-been-separated-from-its-underlying-rcw-cannot-be-u" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;" target="_blank" rel="noopener">.netFunda - COM object that has been separated from its underlying RCW cannot be used. in C#.net [Resolved]</A></LI> </UL> <BR />I hope this helps.<BR /><BR />------------------------------<BR />Hossein Azimi<BR />Customer Support Engineer, APAC<BR />Blue Prism<BR />Australia/Sydney<BR />------------------------------<BR /> Sat, 28 Sep 2019 01:47:00 GMT https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92871#M42562 hossein.azimi 2019-09-28T01:47:00Z https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92872#M42563 Thanks&nbsp;<A id="MainCopy_ctl08_ucMessageList_rptMessageList_ProfileImageDisplay_1_NameLink_1" biobubblekey="b6bb7900-27d9-43cc-ab1e-c7da55495baa" href="https://community.blueprism.com/network/profile?UserKey=b6bb7900-27d9-43cc-ab1e-c7da55495baa" target="_blank" rel="noopener">Hossein Azimi</A>.<BR /><BR /><BR />------------------------------<BR />Neeraj Shekhar Rajput<BR />Developer<BR />Genpact India<BR />Asia/Kolkata<BR />------------------------------<BR /> Mon, 30 Sep 2019 07:32:00 GMT https://community.blueprism.com/t5/Product-Forum/Close-instance-of-Excel/m-p/92872#M42563 NeerajShekhar_R 2019-09-30T07:32:00Z