Windows Map Drive System error 86 has occurred

Happen on Windows 7 when access file sharing or run bat file of map drive.

Solution (On PC problem):

1- Start > in Search box type gpedit.msc

2- Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options

3- Find “Network Security: LAN Manager authentication level” double click on it

4- Set it to “Send LM & NTLM – use NTLMv2 session security id negotiated” click OK

5- Restart

OR

Check the System time , the system time should match TODAY !