Mine did the same, but the bot was still able to run fine from what I could see. If not, you should use EBCD or Kon-Boot that way you can get into the admin account and alter the config of your antivirus client. If your system administrator isn't a complete dick, he will probably not only not care about it, but will give you a pat on the back for figuring that out. I would let him know ASAP though, so when he needs to make get back, he isn't alarmed due to a changed or missing password for the admin account(EBCD can do this). Kon-Boot is far less invasive, and no one would know you used it in the first place

I fully understand your problem but I guess this cannot be fixed easily. First, the antivirus should stop this behaviour because injections are not safe. If an exception could be made by HearthRanger itself, it would also be possible that somebody else could misuse this and infects your system (and others). The best way is still to make an exception yourself in your own antivirus program. However, I understand that it is not the solution you are looking for.

(And even it can be fixed by Joy, it is only temporary. With the next update of your virus scanner, the problem may arise again. As it should be :))