Half life 1 0x01dc1de1 memory could not be written error Thread

I downloaded Half life 1, I was actively playing Half life 1 before.
I haven't logged in for about 6 months and when I logged in again, I encountered an error like the one attached. I turned on data execution blocker (DEP), added the launcher, changed compatibility modes and tried them all but I couldn't open it in any way. In general, I have not come across anyone getting a similar error. Can you help me please? (PC: Win8.1 pro)

Translation of the error: (the language in the image is Turkish) The instruction at address 0x01dc1de1 referenced the memory address 0x01dc1de1, the memory could not be written.

2nd background error: Half life Launcher stopped working.