Hi all, got a protocol driver error 2064 1030 when using cwa 2503 connecting via gateway. All other clients are fine, also internet breakout is used by other clients which can successfully connect. FW Ports are all openend. Any idea?

• 2064 – a general ICA/HDX protocol error indicating that the client cannot properly initiate a session with the server or intermediary (Gateway/StoreFront). • 1030 – an error subcode that typically points to a network communication issue or an incompatible ICA/SSL handshake between the client and the server. Likely causes: outdated OS, missing or untrusted root certificates, or non-standard system configuration causing ICA/SSL handshake failures.

Check to make sure TCP and UDP 443 are open to the gateway, and that the gateway snip has all the necessary ports open to the vdas. If using SSLVDA make sure that tcp/udp 443 are included as well.

as dozen of other clients (including mine) connect to the same gateway onto the same rdsh without issues... OS is w11 24h2 no cert warnings at all. Completely trusted public certificates, propely linked in NS config

Broken CWA installation or outdated OS ? 0. Check Windows Updates status 1. Ask user to verify if all workers via HTML5 client. 2. Ask to verify via web browser -> CWA 3. Ask to verify via CWA without web browser 4. Any proxy / VPN involved on user site? 5. Reinstall CWA

@Marco Zimmermann which version of the 2503 release are you using?