> For the complete documentation index, see [llms.txt](https://help.bizanalyst.in/biz-tally-connection-based-solution/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bizanalyst.in/biz-tally-connection-based-solution/ba-and-tally-connectivity-based-solutions/tally-not-open.md).

# Tally not open

## Tally is not open on Biz Analyst Installed Computer.

**Solution 1:** Open Tally on your desktop to start the data sync.

Step 1: Click on the Windows button at the bottom left of the screen.

Step 2: Search for ‘Tally’ and open Tally ERP 9 or Tally Prime application whichever is installed on your device.

Step 3: If it asks you to activate your license, check solution no. 2

**Solution 2:** If license is missing.

If after opening tally it asks you to activate license then please follow the steps mentioned in this video: 

{% embed url="<https://www.youtube.com/watch?ab_channel=BizAnalyst&v=1z4qTEdqtQo>" %}

Now proceed with opening Tally on all the other computers.