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Extract trainer and make sure trainer/launcher/editor is in a folder excluded from virus scans. Empty quarantine folder if needed or set anything trainer related (paths and EXE's) to ALLOW. Disable any Live/Active/Real-Time tools which may trigger false positives in security software which may terminate the game/trainer when it's activated or options used.

C:\Users\USERNAMEHERE\Cheathappens

may need to be added to exclusions as well. Run trainer as admin, read the instructions and try again.

Anti-virus help page. Link

game closes and gets an error when i press F1.

Delete trainer and all files in

C:\Users\USERNAMEHERE\AppData\Local\Temp
C:\Users\USERNAMEHERE\Cheathappens\Work
C:\Users\USERNAMEHERE\AppData\Roaming\Cheat Happens\0x90
C:\ProgramData\CheatHappens

Learn how to make your own Trainer Cleaner for the above paths Here. Link

Reboot PC to clear excess memory, get a fresh copy of latest trainer and extract it. Run trainer as admin, read the instructions and try again. At times, a new game may be needed to resolve failed options if the data in your save file was altered. Use on a new game and test the option. If it now works, quit to main menu and load your save and try it again. May also need to run the game without the trainer first and play a bit so the save file gets updated to use possible new values.

Completed all above rebooted download fresh trainer started the game played until it saved went out back in make sure it did save, open trainer at main menu press F1 it closes with same error its been working fine since game came out for me just tonight this started i open game went into save press f1 same thing. "20:38:40: Successfully attached to valheim
20:38:42: Mono Pipe shutdown: System.ObjectDisposedException: Cannot access a closed pipe."



[Edited by dotkom, 2/20/2021 10:39:33 PM]

You security software/antivirus could still be blocking something.

Extract trainer and make sure trainer/launcher/editor is in a folder excluded from virus scans. Empty quarantine folder if needed or set anything trainer related (paths and EXE's) to ALLOW. Disable any Live/Active/Real-Time tools which may trigger false positives in security software which may terminate the game/trainer when it's activated or options used.

C:\Users\USERNAMEHERE\Cheathappens

may need to be added to exclusions as well. Run trainer as admin, read the instructions and try again.

Anti-virus help page. Link

Note: Exclusions may need to be added to both Widows Defender and the 3rd party software you use.

Is there any "risks" with using this on my own dedicated server that me and my friends play on?

It is indeed online, but it's password protected and it's running on a virtual server that I pay for. So it's not public. And I'am admin on it. I would kind of consider that as "singel player" but with friends.

Thanks!

I played hours with friends and with the trainer activated on my own server and even on my friends servers, nothing happened.

Does not change the fact that CHEAT HAPPENS does not support or condone the use of cheats in a multiplayer environment.