IIS URL redirect error

When you are using iis to redirect  proxy IIS Return 404.4 Not Found when URL Rewrite on some pages , but page exists.

Open IIS rewrite web.config  file  and add inside the <system.webServer> tag, add the following:

<security>

<requestFiltering allowDoubleEscaping="true" />

</security>

Clear IIS logs using powershell script

get-childitem -Path c:\inetpub\logs\logfiles\w3svc*\*.log -recurse |
where-object {$_.lastwritetime -lt (get-date).addDays(-30)} |
Foreach-Object { del $_.FullName }

Port forwarding on WIndows Server

run cmd as Administrator

netsh interface portproxy add v4tov4 listenaddress=YOUR_IP_HERE listenport=8080 connectaddress=YOUR_IP_HERE connectport=80

to view proxy rules use this command:

netsh interface portproxy show all

tocheck use this command:

netstat -ano | findstr :<listenport number>

To delete this rule use command:

netsh interface portproxy delete v4tov4 listenaddress=YOUR_IP_HERE listenport=8080 connectaddress=YOUR_IP_HERE connectport=80

Install a Windows service using a Windows command prompt

run CMD as Administrator:

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe" "c:\myservice.exe"

Permission to read private key IIS Server

You need the permission to read private key for IIS Server.

   1.Go to this path:  C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys[File Name]

2. Go to that path and open file properties
3. Go to security tab
4. Click on "Edit" then "Add"
5. Add  users "Network Service" and "IIS_IUSRS" and give Full controll Permitions.

or add  IIS AppPool\[your application pool name]

View IIS Errors

Open Web.config file on the IIS  site -> There you need to search for CallStack and change CallStack = “true” 

Similarly search for CustomError and change CustomError =”Off” 

That’s it you can now browse the page where you are facing the issue and then you will be able to know the root cause of the error and then accordingly handle it.

Remove IIS Logs Script

Script to remove IIS logs:


$start = (get-date).AddDays(-30) 
Get-ChildItem -Path c:\inetpub\logs\logfiles\w3svc*\*.log | where {$PSItem.LastWriteTime -lt $start} | Remove-Item

Add this sctipt to windows scheduler, and logs will be remove automatically!

Install Failover IIS Cluster using Powershell

   Check installed rolles NLB and IIS

Get-WindowsFeatute -name NLB,web-server

  Install roles web server and nlb on 3 servers from 1 console:

Invoke-Command –ScriptBlock {Add-WindowsFeature –Name NLB, web-server,wb-asp-net,webapp-dev,Web-ISAPI-Filter -IncludeManagementTools} –Computername iis01,iis02,iis03

  Create Nlb Cluster:

New-NlbCluster –hostname iis03 –OperationMode Multicast –ClusterName nlb01 –InterfaceName ethernet0 –ClusterPrimaryip 192.168.128.50 –SubnetMask 255.255.255.0

  Show NLB cluster

Get-NLBcluster –hostname iis03

$NLB= Get-Nlbcluster –hostname iis03

  ADD nodes to NLB cluster :

Add-NlbClusterNode –InputObject $Nlb –NewNodeName iis01 –newNodeInterface Ethrnet0

Add-NlbClusterNode –InputObject $Nlb –NewNodeName iis02 –newNodeInterface Ethrnet0

  Open TCP 80 port on firewall :

Set-NlbClusterPortRule –HostName iis03 –NewStartport 80 –NewEndPort 80

  ADD Dns record for cluster name :

Add-DnsServerResourceRecordA –ZoneName corp.local –Name nlb01 –Ipv4address 192.168.128.50