IIS backup and restore

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Backup and restore IIS 10 webserver configuration with appcmd.exe and PowerShell. If you are using Windows Server IIS as your web server software, it is important to make regular backups. Luckily, using appcmd or PowerShell, this is quite easy.

Creating backups ensures you have valid data to restore when something went wrong. For example, if you deleted a site that shouldn’t be deleted, you can restore the created IIS backup. It particularly comes in handy when you remove orphaned IIS web applications automatic in a PS script.

Did you know IIS automatically creates these backups when you change settings through IIS Manager? You can find them in %SystemDrive%\inetpub\history. This is part of the built-in IIS configuration history feature. Neat, right?! :-)

Using appcmd list backup you can view the available IIS configuration history feature:

PS C:\inetpub\history> appcmd list backup BACKUP "CFGHISTORY_0000000104" BACKUP "CFGHISTORY_0000000105" BACKUP "CFGHISTORY_0000000106" BACKUP "CFGHISTORY_0000000107" BACKUP "CFGHISTORY_0000000108" BACKUP "CFGHISTORY_0000000109" BACKUP "CFGHISTORY_0000000110" BACKUP "CFGHISTORY_0000000111" BACKUP "CFGHISTORY_0000000112" BACKUP "CFGHISTORY_0000000113" BACKUP "CFGHISTORY_0000000114"
Code language: PHP (php)

I can create an IIS backup using the add parameter:

PS C:\inetpub\history> appcmd add backup BACKUP object "20191105T002034" added
Code language: JavaScript (javascript)

and list lists it

PS C:\inetpub\history> appcmd list backup BACKUP "20191105T002034" BACKUP "CFGHISTORY_0000000104" [...]
Code language: PHP (php)

The backups created by appcmd are saved in the directory C:\Windows\System32\inetsrv\backup\.

If needed, you can restore a backup easily in IIS with appcmd as well:

PS C:\inetpub\history> appcmd restore backup /backup.name:"20191105T002034" /stop:true Restored configuration from backup "20191105T002034"
Code language: JavaScript (javascript)

The command above restores the backup called “20191105T002034”, and by using /stop:true I forced IIS to stop before performing the restore.

Backup and restore IIS configuration with Powershell

If you want to use PowerShell to create an IIS configuration backup, you can use the Backup-WebConfiguration cmdlet. Backup-WebConfiguration is available in the webadministration module.

An easy example is:

PS C:\Users\janreilink> Backup-WebConfiguration -Name MyIISBackup Name Creation Date ---- ------------- MyIISBackup 12/19/2019 12:00:00 AM
Code language: JavaScript (javascript)

Backups are stored in the C:\Windows\System32\inetsrv\backup directory.

HTH :-)

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