To solve this,
1. Right-click on Marketwatch < Link to Excel
2. Go to Excel and right-click on it before opening < Properties < Run as Administrator < Paste
Please make sure you have the following in place as well,
1. Please check with customer service if Excel rights have been assigned to you
2. MS Office, Windows OS, and Nest all have to be 32 bit / all have to be 64 Bit only – MUST be matching
3. If you're running Excel in normal mode then run Nest also in normal mode OR refer to the 4th point
4. Run Excel in admin mode - right click and run as administrator and run Nest also in admin mode