In IIS Manager, the NES Application Pool is in the Stopped state. When you start the application pool, the pool runs for a short time but stops again.
When you attempt to connect to the NES Administrator Console, a 503 error appears.
The password the application pool identity account has expired or changed, or the account is disabled.
Correct the issue with the account, and if you changed the password, then perform the following steps to update the password in IIS.
- In IIS Manager, from the navigation pane, select Application Pools.
- Right-click the NES Application Pool, and select Advanced Settings, as shown in the following figure
Figure 1. Application Pool Advanced Settings option
- Click the Ellipses for the Identity setting as shown in the following figure.
Figure 2. Application Pool Advanced Identity option
- On the App Pool Identity window, click Set, as shown in the following figure.
Figure 3. Application Pool Advanced Identity option
- On the Set Credentials window, type the username for the application pool identity, and the new password. Click OK.
Figure 4. Application Pool Advanced Identity option
Microsoft Monitoring Agent is stopping the application pool.
The following error appears in the Application Event Log file:
Log Name: Application Source: Application Error Date: dd/mm/yyyy Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: xyz Description: Faulting application name: w3wp.exe, version: 8.0.9200.16384, time stamp: 0x50108835 Faulting module name: PerfMon64.dll, version: 8.0.10918.0, time stamp: 0x577fd168 Exception code: 0xc0000409 Fault offset: 0x0000000000149794 Faulting process id: 0x2c38 Faulting application start time: 0x01d24405d195eb6a Faulting application path: c:\windows\system32\inetsrv\w3wp.exe Faulting module path: C:\Program Files\Microsoft Monitoring Agent\Agent\APMDOTNETAgent\V8.0.10918.0\PerfMon64.dll
Disable the Microsoft Monitoring APM service or remove the APM component from the application