https://help.tallysolutions.com/docs/ts9rel54/ts9/release_5.5.7.htm

Release Notes for Tally.Server 9 Release 5.5.7

‚óŹ When Tally.ERP 9 installed on a computer configured with more than 10 IPs tried to access the company data connected to Tally.Server 9, an error TallyServer has closed this connection. Please contact your Administrator. was displayed. To resolve this issue, click here .