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0xc000009a error - have to restart PC to fix

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I'm seeing this 0xc000009a error come up when starting Firefox if I leave my PC on for a long time. Restarting the computer solves it, but it always comes back again the next time I leave the PC on for a while. The computer isn't going into hibernation, only power save on the monitor. And it never happens if I leave a Firefox window open when I step away. Any idea what this might be?

BTW, this is a new PC, less than a month old.

I'm seeing this 0xc000009a error come up when starting Firefox if I leave my PC on for a long time. Restarting the computer solves it, but it always comes back again the next time I leave the PC on for a while. The computer isn't going into hibernation, only power save on the monitor. And it never happens if I leave a Firefox window open when I step away. Any idea what this might be? BTW, this is a new PC, less than a month old.

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mascan42 said

BTW, this is a new PC, less than a month old.

Hello mascan42,

Just in case your PC is a Lenovo; please see this thread ....