If you encounter issues with session recording via Devolutions Gateway, it may be due to an invalid TLS certificate. There are several reasons why a TLS certificate could be considered invalid. Here are the most common causes:
- Misconfigured certificate: Incorrect setup or installation of the TLS certificate.
- Domain mismatch: The certificate is issued for a different domain (e.g., certificate issued for example.loc but the host destination address is not-example.loc).
- Break in the chain of trust: The certificate issuer's identity cannot be verified.
- Incorrect date/time on client machine: If the local date/time on the client machine is incorrect, the certificate may be considered expired if it falls past the certificate's expiration date.
- Broken certificate structure: The certificate has an invalid digital signature or other structural issues.
- Outdated hashing algorithm: The certificate uses only the SHA-1 hash algorithm, which is outdated and no longer considered secure.
- Revoked certificate: The certificate has been revoked by the issuing authority.
- Self-signed certificate and Sophos: When using a self-signed certificate, if the client is using Sophos, the certificate may be replaced by an untrusted one, bypassing the option to allow self-signed certificates by Remote Desktop Manager.
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