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IAS – In the 26.1 Spring Service Pack users receive error messages like “Session Control” & “Session will end: Your Administration has terminated your session”

Article ID

ias-26-1-service-pack-session-control-session-will-end-your-administration-has-terminated-your-session-error-messages

Article Name

IAS – In the 26.1 Spring Service Pack users receive error messages like “Session Control” & “Session will end: Your Administration has terminated your session”

Created Date

2nd June 2026

Problem

Resolution

After upgrading to version 26.1.10.60 or 26.1.10.61 of IRIS Accountancy Suite users report being removed from the software and receiving errors like “Session will end: Your Administration has terminated your session” or “Session Control : Shared memory is locked”.

The 26.1.12 hotfix is now available, please see the table below for what actions to take depending on your current version.
Your version of IRIS can be checked via Help | About in the application.
Hotfixes come in two formats, an installer and a payload.

The installer format can be downloaded and applied to IRIS installs like an update.
The payload format is a .zip archive that must be extracted and you then copy/cut & paste the files into your IRIS Installation locations.
The payload can replace the existing versions of the files or you can rename the existing files prior to pasting the hotfix payload into the directory.

Both formats need to be applied to your full install of IRIS, and any Local Programs Only (LPO) installs you may have deployed.

If you right click on the IRIS desktop shortcut and open file location it should take you to the relevant location for your install, with workstation (WSS) installs taking you through the main install location.

If you are on v26.1.10.640 or 26.1.10.60Update to 26.1.10.61(q) which can be found on our downloads page
AS Downloads | IRIS Accountancy Suite Support | IRIS
If you are on 26.1.10.61Download and apply the hotfix to your full install and to any Local Programs Only installs.

Installer
IRIS 26.1.12 Hotfix

Payload
IRIS 26.1.12 Hotfix

Please follow these steps to apply the hotfix.
1) Remove the switch from the tt.ini file by navigating to the IRIS install folder, going into the database0 folder and opening tt.ini, under the [SWITCHES] section remove

0007CatchSerialNum0=0

2) Make sure all users are logged out before executing the hotfix installer and that the server is restarted afterwards.

Screenshot 2026 06 02 134742 | IAS - In the 26.1 Spring Service Pack users receive error messages like "Session Control" & "Session will end: Your Administration has terminated your session"

Screenshot 2026 06 02 134634 | IAS - In the 26.1 Spring Service Pack users receive error messages like "Session Control" & "Session will end: Your Administration has terminated your session"

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