Hosts running old versions of parsecd.exe will report their certificate is invalid and will be unable to update to future versions following 150-102.
About the update
In early 2026, we updated our signing certificate and pushed an update out for parsecd.exe, the Parsec Loader.
On March 2nd 2026, we released 150-102. Following that, any Windows computer that is not running the updated Loader will show a warning that Parsec is out of date.
Typically, updates to the Parsec Loader happen automatically when the computer has restarted, or Parsec has been fully quit and started again. However, if you have long running hosts in your environment, they may not have updated.
How to discover out of date hosts
Admin Dashboard
As a Teams Admin, you can see which Windows computers are out of date by visiting this page. At the top of this page, you will see a notice with a link to a CSV. This file will contain a list of computers that have reported loader with a version less than 14.
Please note: macOS hosts may be represented on this list, but no action is needed for macOS hosts or clients. There also may be duplicate hosts reported in this list. You can use last_online, name and online fields to figure out which are duplicates.
From the computer itself
The app will report its version to be 150-102 followed by a letter, if it is outdated. You can find the build of the app in the Parsec settings, at the top-right.
How to discover out of date clients
From the computer itself
The app will report its version to be 150-102 followed by a letter, if it is outdated. You can find the build of the app in the Parsec settings, at the top-right.
How to update out of date hosts and clients
Restart the computer
Typically, restarting the computer should update the loader (pservice.exe) and service (pservice.exe), and subsequently allow the Parsec app to update.
Force stop the app and service
You can force stop pservice.exe and parsecd.exe to stop using task manager or scripting, and then start the Parsec service. Doing so will allow the loader (parsecd.exe) to update, and subsequently allow the Parsec app to update to versions past 150-102.
Use a custom installer
We have created a custom installer that specifically updates pservice.exe, and parsecd.exe without modifying any other parts of your Parsec app. Running this on the computer should correct the issue and allow the computer to receive future updates.
Use our regular installer with a special flag
The latest version of the Parsec for Windows installer has an additional command flag below to perform the same action as the custom installer. Running this on the computer should correct the issue and allow the computer to update to versions past 150-102.
parsec-windows.exe /programfiles
Confirm the update was successful
If the host has updated correctly, the app will no longer show the out-of-date warning banner. If the app has hosting enabled, it will no longer be displayed on the list of out of date hosts on the admin dashboard.