Why does the Folder sensor in PRTG fail with "Cannot access folder: The folder doesn't exist (code: PE032)" when added to a device that is not a probe, despite working WMI sensors and adjusting security settings?


The folder sensor needs an UNC path starting with a share on the target computer. The UNC name of the target computer has to be omitted as it is automatically taken from the sensor's device.

Let's say you want to monitor the temp folder on the C: drive of your target computer. You'll have to enter C$\temp as path.

Paths beginning with C:\ would always refer to the C: drive of the probe computer, independent from the device the sensor is situated in.


Just a note to all having trouble accessing a folder (pe032):

You would be able to solve this (or work around this rather) by changing the Spool folder hosting Server settings in PRTG to use the FQDN rather than the IP address in the "IPv4 Address/DNS Name" section and the same in the "Service URL" section. No more errors after that.


Disclaimer:
The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.