I have done that and it still will not let me remove it or netfile - the sin # cannot be removed and it keeps asking for an address that I do not have....

I have the same error and cannot remove the T776(1) Form.  This form doesn't have any information except the pre-filled personal information by the program and all figures are 0.  I have no rental property and no rental income at all!  I have no idea why the Statement of Real Estates Rentals Form is open and why it keeps asking me to fill in the rental property address.  The program keeps asking me fix this error.  With this error, I now cannot Netfile my taxes.

Please help!!

Went to Forms Lookup, typed in T776, but there is no asterisk (*) next to any of the T776 forms.  I have no rental properties addresses to enter as there is no rental income and I have no rental property.  This form only has the prefilled name, address, fiscal period and industry code (in blue).  Only the SIN is in black color. 

Please advise how I can Netfile my taxes as I don't know how to fix this ERROR which came out from no where. 

Thank you!

Please contact our phone support team at 1-888-829-8608 as they will be better able to assist you.

I was having the same issue with a business that was accidentally created.  I tried everything, and then decided to do it step by step.  I went to each related form and cleared the information (Edit - Forms - Clear current form).  I had to do it for the Self-employment form and the Self-employment Summary form.  Then I went back to my T1General and selected Edit - Forms - Close unused forms.  Then I was able to netfile.