> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/rdm/knowledge-base/troubleshooting-articles/forticlient/fips-encryption.md).

# FIPS (encryption)

`System.invalidoperationexception: this implementation is not part of the windows platform FIPS validated cryptographic algorithms.`

The problem could be related to the FIPS mode enabled.

Remote Desktop Manager uses the AES/Rijndael encryption and SHA-256 hashing algorithms, which are implemented by the Microsoft .NET Framework. If the local security policy on your system enforces FIPS compliant implementations, Remote Desktop Manager cannot run. As a result, you will receive this error message.

### Solution 1

To fix this error, configure the Local Security Policy on your system to allow FIPS non-compliant algorithm implementations.

Here are the steps:

1. Go to ***Control Panel – Administrative Tools – Local Security Policy – Open Local Policies – Security Options***.
2. Disable the option ***System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing***.

Some software (i.e., Cisco VPN Anyconnect) requires the use of FIPS. If this is your case, you must implement the alternative solution described below.

### Solution 2

Inside Remote Desktop Manager's installation folder, create a text file named **RemoteDesktopManager.exe.config** containing the following:

```
<configuration>
    <runtime>
        <enforceFIPSPolicy enabled="false"/>
    </runtime>
</configuration>
```


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