here is the text that has come with it...:
Arma 3 Launcher Emergency Log
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Arma 3 Launcher is unable to start due to corruption in a configuration system.
http://arma3.com/launcher/troubleshooting
http://feedback.arma3.com/
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System information
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Date: 2017-06-03 07:50:40 / 2017-06-03 00:50:40 -07
Current dir: C:\Program Files (x86)\Steam\steamapps\common\Arma 3
Command line: "C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3launcher.exe"
Version: 1.5.141.829
CLR version: 4.0.30319.42000
OS Version: Microsoft Windows NT 6.3.9600.0
OS 64bit: True
Process 64bit: False
Personal dir: C:\Users\Vedant\Documents
Local App Data dir: C:\Users\Vedant\AppData\Local
Culture: en-US
UI Culture: en-US
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Errors
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Message: Configuration system failed to initialize
Message: Unrecognized configuration section system.web.
File name: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config
Line: 15
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Trace
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System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section system.web. (C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config line 15)
at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()
at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
--- End of inner exception stack trace ---