troubleshooting Question

Why cannot open any excel files after enable "Ignore other application that use Dyanamic Data Exchange (DDE)"

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eemoon asked on
Microsoft OfficeMicrosoft Excel
9 Comments2 Solutions3258 ViewsLast Modified:
Hi I cannot open multiple excel(2010) instances at the same time. After enabling "Ignore other application that use Dyanamic Data Exchange (DDE)", I can open multiple instance. However, days ago, I suddently could not open all excel files. After disable "Ignore other application that use Dyanamic Data Exchange (DDE)", I can open excel file, but i cannot open multiple excel files at the same time. Anyone can give some idea for this? Thanks

"Ignore other application that use Dyanamic Data Exchange (DDE)" is located at Option ----> Advanced ----> General
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