# Parallels Desktop 1.26.4

- Product: Parallels Desktop (https://whatsnew.fyi/product/parallels-desktop)
- Vendor: Parallels
- Date: 2026-08-17
- Version: 1.26.4
- Original notes: https://apps.apple.com/us/app/parallels-desktop/id1085114709?mt=12&uo=4
- Permalink: https://whatsnew.fyi/product/parallels-desktop/releases/1.26.4
- Labels: Platforms: macOS

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **fixed** — Issues with Microsoft account sign-in, Windows Hello, and Intune enrollment after installing update KB5101650 on Windows virtual machines
- **fixed** — RSTAB9 viewer app showing a black screen when attempting to view a file
- **fixed** — Various OpenGL-based applications showing rendering areas as completely black
- **fixed** — In Kali Linux virtual machines using the Xfce desktop, a portion of the screen becoming inactive

Parallels Desktop for Mac App Store Edition 1.26.4 (23937) update addresses the overall stability and security issues and includes the following additions and improvements:

Windows virtual machines
- Fixed: Issues with Microsoft account sign-in, Windows Hello, and Intune enrollment after installing update KB5101650 on Windows virtual machines.
- Fixed: RSTAB9 viewer app would show a black screen when attempting to view a file.
- Fixed: Various OpenGL-based applications (e.g., Blue Sky Plan and coDiagnostix) would show rendering areas as completely black.

Linux virtual machines
- Fixed: In Kali Linux virtual machines using the Xfce desktop, a portion of their screen would become inactive.