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Team viewer lack of certificate blocking Virtual box

I've been runing virtual box for a few years alongside team viewer, but recently it has refused to load, with teh following in the error log
TeamViewer\tv_x64.dll [lacks WinVerifyTrust]

Thier help site says that this indiactes a lack of certification by team viewer, and to ask "the software vendor" (ie team viewer) to fix certification.

I cant do this as I'm a private user and cannot contact them.

could someone who has a paid copy please let them know of this problem with Team viewer 12. (I've not upgraded to 13 as 12 does all I need between my laptop when I'm out and my desktop at home, or at times my daughter's desktop or my wife's laptop all of whom turn to me to sort out issues. (they phone me wherever I am)