You'll see the following error message in H&R Block’s 2016 tax software if you have entered your last name into the tax software prefaced by a non-alphanumeric character:
The last name you entered doesn’t seem to be valid. Please ensure you entered it correctly. [error code: 177]
How do I fix this?
To correct the error, enter your last name correctly in the designated field of the Your personal information page in the tax software.
Examples of non-alphanumeric characters that will trigger this error include: [ and ]