Steps to reproduce:

1. Add Windows host to Zabbix Server and create a few perf_counter (or perf_counter_en) items. For example you can use SQL Server counters.
2. Wait until the items begin to collect data.
3. Make the counters disappear from the Windows. For example you can stop SQL Server services.
4. Wait until the perf_counter items change its state to unsupported with error "Cannot obtain performance information from collector."
5. Make the counters appear again in the Windows system. For example you can start again SQL Server services.
6. Verify that the counters appear on the system. For example you can use perfom.exe utility.
7. Wait a while for the agent to try to collect data. Or you can manually start the collection using the "Check Now" button.

Result:
Items still remain in an unsupported state. with error "Cannot obtain performance information from collector."
Expected:
Start data collection.