OCCT is the most popular all-in-one stability check & stress test tool available.
Publisher’s description
What is OCCT?
OCCT by OCCT is proprietary Windows software.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. The main installer is 206.7 MB. It runs without installation (portable).
Updates and version history
The current version is 17.1.10.0, released on October 21, 2026. The version history goes back to July 17, 2026: 19 releases, all linked to the official files. The last update is less than a month old.
Pros / Cons
Pros
- Portable: runs without installation
- Updated in the last two months
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
In short: OCCT is a Windows tool for 64-bit PCs.
Is OCCT safe to download?
- The file is served by ocbase.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
64F403FB690AFA724B3BF31F439F8A29C81C34B4D3496A63456A9AB224E9599B· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 19 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 17.1.10.0Latest | October 21, 2026 | 206.7 MB | 64-bit Portable |
| 17.1.9.0 | October 16, 2026 | — | 64-bit Portable |
| 17.1.8.0 | October 13, 2026 | — | 64-bit Portable |
| 17.1.7.0 | October 6, 2026 | — | 64-bit Portable |
| 17.1.6.0 | October 1, 2026 | — | 64-bit Portable |
| 17.1.5.0 | September 23, 2026 | — | 64-bit Portable |
| 17.1.4.0 | September 21, 2026 | — | 64-bit Portable |
| 17.1.3.0 | September 17, 2026 | — | 64-bit Portable |
Install from the command line
Silent install ›winget install --id OCBase.OCCT.Personal -eProgram files (.exe): occt.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- OCCT
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 17.1.10.0
- Released
- October 21, 2026
- Added to the catalogue
- July 17, 2026
- Versions listed
- 19
- Website
- ocbase.com
- winget ID
- OCBase.OCCT.Personal
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is OCCT free?
OCCT is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is OCCT safe to download?
The download comes from ocbase.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install OCCT with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does OCCT run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of OCCT?
The versions page lists all 19 versions with links to their official installer files, back to July 17, 2026.
Can I use OCCT without administrator rights?
Yes, it is portable: unpack and run it.