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Got this error when running a C# console app in VS 2019:
Could not load file or assembly 'System.Runtime, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Please help.
Solved the problem. Installed a needed assembly in the global assembly cache using gacutil -i "dll full pathname".
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(140.8, 78%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETS%3C/text%3E%3C/svg%3E)
Hello @DERIQUITO, ARCHIMEDES R,
I’m glad to hear that this issue doesn’t block you anymore.
Sometimes, this issue is caused by targeting the wrong framework, but installing the corresponding assembly into the GAC will definitely make VS detect it.
Anyway, thanks for sharing your solution here. Have a nice day.
Kind Regards,
Tianyu
This is odd. I executed the script task that uses the assembly in SSIS during a presentation and it worked multiple times. Then afterwards, I continued working on the SSIS package and, without even closing VS, the script started breaking again with the same error. I exit VS, ran gacutil again but it didn't fix the problem this time. I rebooted my laptop, ran gacutil but the problem still persists. Please help. VS seems to be very unstable.
The problem disappeared when I uninstall the assembly from GAC. This is funny. First time I got the problem I installed the assembly to the GAC to resolve it. The second time the problem occurred I had to uninstall it.