Start-up "Problem sending command" even after re-installing entire application

Was obviously messing around where I shouldn't have been and now ALL my Excel docs open blank (no sheet/workbook - only grey).

Excel APPLICATION itself opens just fine and able to work on my documents, so not a train smash.

I've tried re-tracing my steps which extends from:
Template/Start-up file ("Roaming" and "Program Files" locations) create/delete
AddIns (especially VB) enable/disable
Adjusting most of Excel settings in "Options"
Registry Edits; and finally
Uninstall + Re-Install


..and YET I am still sitting with the problem. Been to the dark corners of the internet ... please help.

First step - make sure the "Ignore Other Applications That Use Dynamic Data Exchange (DDE)" option is unchecked in Excel Options on the Advanced tab. You'll find it in the 'General' section near the bottom.

Finally got a solution....

Refer to this link for other solutions if this does not work for you:

http://www.askvg.com/fix-there-was-a...ge-in-windows/

SOLUTION 3:
Sometimes this error message occurs when "Run as administrator" option is enabled for the program. You can fix it using following steps:
1. Open Start Menu or Start Screen and look for the Office program shortcut which is causing this problem such as Word, Excel, etc.
2. Once you find the shortcut, right-click on it and select Properties option.
3. Now go to Compatibility tab and uncheck/disable all given options specially "Run this program as administrator".