Can't update TCC/TCMD to 20.00.25

Feb 14, 2012

When I checked for updates in TCC, it informed me that an update to 20.00.25 is available. When I told it to install, it downloaded and attempted to install, and then it game me this error:

"Error: Update installation was blocked, digital signature mismatch. Please contact technical support."

So, I tried this in TCMD, and got the same error.

I'm on Windows 10 Pro, Anniversary Release. I have administrator rights on the machine.

What should I do to upgrade? ...thanks!