Failed to start monitoring file changes

[gregory_storme]

Hi,

After installing the Plesk 8.6.0.1 update 080819.20 we started having problems with .net websites.
These errors appeared:

Exception Details: System.Web.HttpException: Access denied to 'C:\Inetpub\vhosts\domain.be\httpdocs\web.config'. Failed to start monitoring file changes.

In event log:

Event code: 3008
Event message: A configuration error has occurred.
Event time: 1/09/2008 19:03:32
Event time (UTC): 1/09/2008 17:03:32
Event ID: b7eaea9c2a7343ab98bf5a5c51bd4a49
Event sequence: 1
Event occurrence: 1
Event detail code: 0

Application information:
Application domain: /LM/W3SVC/10240/Root/website-6-128647622122020000
Trust level: Full
Application Virtual Path: /website
Application Path: E:\inetpub\vhosts\domain.be\httpdocs\DotNetNuke\
Machine name: SERVER

Process information:
Process ID: 400
Process name: w3wp.exe
Account name: SERVER\IWAM_plesk(default)

Exception information:
Exception type: ConfigurationErrorsException
Exception message: An error occurred loading a configuration file: Failed to start monitoring changes to 'E:\inetpub\vhosts\domain.be\httpdocs' because access is denied. (E:\inetpub\vhosts\domain.be\httpdocs\web.config)

Request information:
Request URL: http://www.domain.be/website/Default.aspx
Request path: /website/Default.aspx
User host address: xxx.xx.xxx.xx
User:
Is authenticated: False
Authentication Type:
Thread account name: SERVER\IWAM_plesk(default)

Thread information:
Thread ID: 6
Thread account name: SERVER\IWAM_plesk(default)
Is impersonating: False
Stack trace: at System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags)


This happens on both .net 1.1 and .net 2.0 sites.
Fixed it by giving the everyone user read permissions on the folder containing the web.config file.
I tried running the plesk reconfigurator to fix permissions but that did not work.

This problem occured on a lot of websites, both sitebuilder and non-sitebuilder sites, what could be the cause of this and how can I check if the problem is fixed on all websites without visiting every one of them?