This message can occur if your local authentication cache or security settings are out of date. It is most commonly resolved by applying the latest update or clearing cached credentials.

If you are certain that your account has the role Timetabler, but you are still seeing the error message, please follow the steps below.

Step 1 – Check for updates

1. Open Timetabling Solutions V10.
2. If prompted to activate, close the prompt.
3. Click the 10 icon in the top-left corner and select Check for updates.
4. Apply any available updates.

After installing the update, try signing in again.

Step 2 – Run ActivateSoftware.exe directly

1. Browse to the location where V10 is installed, most likely it is C:\Program Files (x86)\Timetabling Solutions\Timetabling Solutions Version 10.
2. Double-click Activatesoftware.exe and attempt to sign-in
3. If you are an administrator, right-click Activatesoftware.exe and select Run as administrator.
Note: if the page below appears, click Re-activate and then confirm


Step 3 – Re-sync your system clock

1. On your machine, click the Windows icon on your taskbar, open Settings > Time & language > Date & time.

2. Click Sync now to re-sync your device clock.

3. Restart your machine and try signing in again.

If you do not have access to this function, please ask your IT to assist.  Accurate time is critical for machines to communicate.


Step 4 – Verify TLS settings

1. Click the Windows icon on your taskbar and search for Internet Options.


  • Go to the Advanced tab.

  • Scroll down to the Security section and ensure the following are set:

    • ✅ Use TLS 1.2 – Checked

    • ✅ Use TLS 1.3 – Checked (if available)

    • ❌ SSL 3.0, TLS 1.0, TLS 1.1 – Unchecked

  • Click Apply, then OK.

  • Try signing in again.

Step 5 – Clear the authentication cache

1. Close Timetabling Solutions V10, Outlook, and Microsoft Teams.

2. Copy and paste the following path into File Explorer and press Enter:
%LOCALAPPDATA%\TimetablingSolutions\ActivateSoftware\EBWebView

3. Delete the contents inside the EBWebView folder.

If Windows says any file is “in use,” make sure all Timetabling Solutions apps (and any background processes named Timetabling Solutions Cloud Integration, ActivateSoftware.exe or EBWebView2.exe) are closed and try again.

TIP:  press Ctrl + ALt + Delete, right-click and select End task



Contact Support
E: support@timetabling.com.au
W: www.timetabling.com.au/support
P: +61 3 5228 3700 9 am to 5 pm, local time, Melbourne, Australia