LocalCommErr - How to Fix

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If you get this error, it's an easy fix. Just try the solutions below and contact us if your issue is not resolved. 
The license server has encountered a problem:
LocalCommErr
Program will continue to run with limited license options.

Sentinel / LDK License Manager was stopped. Usually, a simple computer restart will take care of this. If not, go to My Computer (right-click) > Manage > Services and re-enable the Sentinel service.
The drivers on a client (or server) are obsolete or have become corrupted. You can tell if by pointing a browser on each machine to the Admin Control Center: http://localhost:1947/_int_/diag.html - if you get an error when trying to load this page, or if the “Run-time installer and Package” are not 7.80 or newer, or if they mis-match, install the latest drivers from here (see "Sentinel Run Time Installer" at this link):  http://www.pcblibraries.com/products/fpx/userguide/default.asp?ch=305
Firewall change and/or lockout. Network license only. Could be Windows firewall or another third party (Norton, McAfee, ZoneAlarm, etc). Fix: open Port 1947 on both client and server to both TCP and UDP traffic.
Server IP address changed. Network license only. Try to use the steps here to configure an IP address:
http://www.pcblibraries.com/products/fpx/userguide/default.asp?ch=74

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Nick B Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 02 Jan 2012 Status: Offline Points: 1908	Post Options Post Reply Quote Nick B Report Post Thanks(0) Quote Reply Topic: LocalCommErr - How to Fix Posted: 14 Jul 2017 at 1:07pm
	If you get this error, it's an easy fix. Just try the solutions below and contact us if your issue is not resolved. The license server has encountered a problem: LocalCommErr Program will continue to run with limited license options. Sentinel / LDK License Manager was stopped. Usually, a simple computer restart will take care of this. If not, go to My Computer (right-click) > Manage > Services and re-enable the Sentinel service. The drivers on a client (or server) are obsolete or have become corrupted. You can tell if by pointing a browser on each machine to the Admin Control Center: http://localhost:1947/_int_/diag.html - if you get an error when trying to load this page, or if the “Run-time installer and Package” are not 7.80 or newer, or if they mis-match, install the latest drivers from here (see "*Sentinel Run Time Installer" at this link): http://www.pcblibraries.com/products/fpx/userguide/default.asp?ch=305 Firewall change and/or lockout.* Network license only. Could be Windows firewall or another third party (Norton, McAfee, ZoneAlarm, etc). Fix: open Port 1947 on both client and server to both TCP and UDP traffic. Server IP address changed. Network license only. Try to use the steps here to configure an IP address: http://www.pcblibraries.com/products/fpx/userguide/default.asp?ch=74
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RonaldSmith Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 23 Oct 2020 Status: Offline Points: 5	Post Options Post Reply Quote RonaldSmith Report Post Thanks(0) Quote Reply Posted: 30 Oct 2020 at 3:20am
	Thank you for giving such kind of information, it is really helpful to me and also tried on my computer and it's working.