In the last two weeks, Mathematica works correctly, but every time I start it, the following message appears:

The link sends me to this page.
What happens? How can I correct it?
I run version 10.0.0 on Windows 8.1, 64 bits.
In the last two weeks, Mathematica works correctly, but every time I start it, the following message appears:

The link sends me to this page.
What happens? How can I correct it?
I run version 10.0.0 on Windows 8.1, 64 bits.
"INTERNAL SELF-TEST ERROR: printing|cpp|3435 Information:GetDefaultPrinterDevice failed with Windows System Error 6: The handle is invalid". The printer driver name causing this is "WebEx Document Loader" – Gustavo Delfino Jul 07 '20 at 12:24