Prøv at lave en exception til L4D2 start filen i din firewall i Windows. Jeg har oplevet at mit spil bare er gået i sort, og så lukket uden grund. Det hjalp at lave en exception i firewall manuelt.
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Nu uden signatur :O

#1 Jeg er ikke helt med på hvad du mener. Jeg har givet tilladelse til at firewall ikke blokerer den, hvis det er det du mener.
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Steam: danielhk1995 ;)

#2 - Det er præcis det jeg mener. Har du tilføjet den til listen med undtagelser manuelt, eller har du blot trykket "tillad adgang" første gang spillet starter?
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Nu uden signatur :O

#3 Jeg har tilføjet den manuelt. Det er mystisk.
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Steam: danielhk1995 ;)

Possible fix 1 : 1. Close Steam if running 2. Go to your Steam\Steamapps folder 3. Delete left 4 dead 2 client.ncf 4. Delete client.dll from your steam\steamapps\common\left 4 dead 2\left4dead2\bin folder 5. Start Steam 6. Right click on L4D2 and validate the game 7. After validation is complete, right click on the game and choose Install 8. Let it redownload the file and install it properly Fix 2. For 32bit x86, open a notepad n input this values: Windows Registry Editor Version 5.00 [HKEYCURRENTUSER\Software\Classes\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocHandler] [HKEYCURRENTUSER\Software\Classes\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocHandler32] [HKEYCURRENTUSER\Software\Classes\CLSID{5F63E8CB-8F57-490A-97FE-62BC2F2A5EA4}\InprocServer32] [HKEYCURRENTUSER\Software\Classes\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocServer32] [HKEYCLASSESROOT\CLSID{66B6B493-6055-4572-8FC1-A0FA86D63545}] [HKEYCURRENTUSER\Software\Classes\CLSID{66B6B493-6055-4572-8FC1-A0FA86D63545}] [HKEYCURRENTUSER\Software\Classes\CLSID{F64A6DA6-E8AF-4B7B-BCA8-847AE765D538}] [HKEYCLASSESROOT\CLSID{8D083C4F-F8B1-42ED-851B-51017CF4C161}] [HKEYCURRENTUSER\Software\Classes\CLSID{8D083C4F-F8B1-42ED-851B-51017CF4C161}] [HKEYCURRENTUSER\Software\Classes\CLSID{50D5107A-D278-4871-8989-F4CEAAF59CFC}] [HKEYCURRENTUSER\Software\Classes\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}] than save as l4d2regx86.reg ____________________________________________________________ here's for 64 bit, Windows Registry Editor Version 5.00 [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocHandler] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocHandler32] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{5F63E8CB-8F57-490A-97FE-62BC2F2A5EA4}\InprocServer32] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}\InprocServer32] [HKEYCLASSESROOT\Wow6432Node\CLSID{66B6B493-6055-4572-8FC1-A0FA86D63545}] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{66B6B493-6055-4572-8FC1-A0FA86D63545}] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{F64A6DA6-E8AF-4B7B-BCA8-847AE765D538}] [HKEYCLASSESROOT\Wow6432Node\CLSID{8D083C4F-F8B1-42ED-851B-51017CF4C161}] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{8D083C4F-F8B1-42ED-851B-51017CF4C161}] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{50D5107A-D278-4871-8989-F4CEAAF59CFC}] [HKEYCURRENTUSER\Software\Classes\Wow6432Node\CLSID{BCDE0395-E52F-467C-8E3D-C4579291692E}]
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Specs: NVIDIA GeForce GTX 960M 2 GB GDDR5 Intel Core i7 4720HQ (2.50GHz-boost til 3.20Ghz)