AbaClient combines a Java environment controlled by Abacus with a browser tailored to Abacus needs. The Java environment is based on the open source project OpenJDK which does not cause any Oracle dependencies. The browser allows the use of and for Abacus generated certificates without warning messages.
AbaClient recognises and supports the new "abalink" format, which will be used from Abacus version 2019.
AbaClient also serves as a replacement for the product AbaStart.
Publisher’s description
What is AbaClient?
AbaClient by Abacus Research AG is proprietary Windows software.
Installation and requirements
The publisher provides MSI installers for 64-bit Windows. The main installer is 169.4 MB. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 4.3.1194, released on July 17, 2026. The version history goes back to March 30, 2021: 8 releases, all linked to the official files. That is about 1.5 releases a year.
Popularity and file types
The Chocolatey package has been downloaded 46,953 times. On Windows it registers 1 file type, including .abalink.
Pros / Cons
Pros
- MSI package for managed deployment
- Documented silent install
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
- Installation needs administrator rights
In short: AbaClient is a Windows tool for 64-bit PCs. Administrators can deploy it unattended.
Is AbaClient safe to download?
- The file is served by storage.googleapis.com; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
4485D101907A2DF83A36DF39F329CEFBD86DE0EDB62579290615A7FD55E56D60· 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 8 versions ›8 versions over 5 years · about 1.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 4.3.1194Latest | July 17, 2026 | 169.4 MB | 64-bit MSI64-bit MSI64-bit MSI64-bit MSI |
| 4.2.1165 | April 27, 2026 | 168.5 MB | 64-bit MSI64-bit MSI64-bit MSI64-bit MSI |
| 4.0.1124 | November 17, 2025 | 168.1 MB | 64-bit MSI64-bit MSI64-bit MSI64-bit MSI |
| 3.3.1039 | February 27, 2025 | 349.6 MB | 32-bit MSI |
| 3.2.996 | January 13, 2025 | 336.1 MB | 32-bit MSI32-bit MSI32-bit MSI32-bit MSI |
| 2.4.779 | December 15, 2021 | 261.2 MB | 32-bit MSI32-bit MSI32-bit MSI32-bit MSI |
| 2.3.730 | August 6, 2021 | 251.8 MB | 32-bit MSI |
| 2.1.600 | March 30, 2021 | 220.8 MB | 32-bit MSI |
Install from the command line
Silent install ›winget install --id Abacus.AbaClient -echoco install abaclient -ymsiexec /i abaclient-4.3.1194-de.msi /qn /norestartmsiexec /x {D1BEBC97-E763-418E-B999-BD5FD75A9BA5} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- Abacus Research AG
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 4.3.1194
- Released
- July 17, 2026
- Added to the catalogue
- March 30, 2021
- Versions listed
- 8
- Updates / year
- 1.5
- Chocolatey downloads
- 46,953
- Website
- downloads.abacus.ch
- winget ID
- Abacus.AbaClient
- Chocolatey package
- abaclient
- MSI product code
- {D1BEBC97-E763-418E-B999-BD5FD75A9BA5}
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is AbaClient free?
AbaClient 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 AbaClient safe to download?
The download comes from storage.googleapis.com; 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 AbaClient 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.
Can AbaClient be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does AbaClient 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 AbaClient?
The versions page lists all 8 versions with links to their official installer files, back to March 30, 2021.