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Why should I disable the FIPS mode under Windows?

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I have read in the PRTG manual that disabled FIPS mode is a system requirement to run PRTG. What is the FIPS mode and how can I ensure it is not running on my Windows systems? Why does PRTG require a disabled FIPS?

Does the activated FIPS settings cause sensor errors with, for example, the message 'Exception has been thrown by the target of an invocation'?

dotnet error error-messages fips net-framework prtg security

Created on Sep 19, 2016 4:06:53 PM by  Gerald Schoch [Paessler Support]



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This article applies to PRTG Network Monitor 16 or later

Disable the FIPS Mode on Windows

Error Message: 'Exception has been thrown by the target of an invocation'

FIPS (Federal Information Processing Standard) is a set of standards that define which encryption algorithms can be used on Windows computers. If FIPS is enabled, Windows can only use FIPS-validated encryption and advises all applications to do so as well. Other encryption schemes are blocked away, even if they are newer, faster, and more secure. Because of this, disabling the FIPS setting will not cause security issues.

The enabled FIPS mode even may negatively affect Windows and the applications running on it. This also affects the .NET Framework and so .NET-based sensors in PRTG. The following error message may indicate that the FIPS mode is activated and interferes with your sensors: 'Exception has been thrown by the target of an invocation'

This error message is thrown by .NET and will appear as sensor message. See the following article on Microsoft TechNet for more details about the FIPS mode and Microsoft’s recommendation to disable it.

To disable the FIPS mode on your Windows computers, you have to turn off the security option System Cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing.

Please see the following article on howtogeek.com for more details on disabling the FIPS setting.

Created on Sep 19, 2016 4:14:07 PM by  Gerald Schoch [Paessler Support]



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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.