---
type: Addressed
product: PAN-OS
version: 9.1.14-h1
source: common-crawl
crawl: CC-MAIN-2026-12
---

## PAN-194395

Fixed an issue where the firewall dropped all decrypted outbound (SSL Forward Proxy) HTTP/2 traffic and cleartext HTTP/2 traffic after an upgrade to PAN-OS 9.1.14, which caused websites that used HTTP/2 to become inaccessible.

## PAN-191463

Fixed an issue where the firewall did not handle packets at Fastpath when the interface pointer was null.

## PAN-188036

Fixed an issue where SIP TCP sequence numbers were calculated incorrectly when SIP cleartext proxy was disabled.

## PAN-182244

Fixed an issue where Session Initiation Protocol (SIP) REGISTER packets did not get transmitted when application-level gateway (ALG) and SIP Proxy were enabled, which caused a SIP-registration issue in environments where TCP retransmission occurred.

## PAN-174347

Fixed an issue where sequence numbers were calculated incorrectly for traffic that was subject to SIP ALG when SIP TCP Clear Text Proxy was disabled.

## PAN-89479

Fixed an issue in SIP over TCP and HTTP header insertion features where PAN-OS built-in clear text proxy inserted extra data into the TCP stream when the initial data packets were received out of order.
