How to make all the Sharepoint online sites read only

Question

Hi Guys,

Can you advise how to make all the sites in the Tenant to "Read Only" at a time using PS script

I'm using below command for a specific site collection

Set-SPOSite https://contoso.sharepoint.com/sites/Testsite1 -LockState ReadOnly

Answer 1

Hi @SR VSP ,

Usually we do not recommend doing such a setting at the tenant level. I suggest that you can set the sites you want in a csv file and use PowerShell to make those sites read-only.

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Try this method:

CSV file Sample:

Url
"http://myServer.com/sites/ABC/"
"http://myServer.com/sites/XYZ/"
"http://myServer.com/sites/VCS/"
"http://myServer.com/sites/BVC/"

PS Script

Cls  
  
Add-PSSnapin Microsoft.SharePoint.PowerShell  
  
$SitesColl = import-csv "C:\Temp\2020\SiteCollections.csv"  
  
  
# Set Read Only  
foreach($Site in $SitesColl)  
{  
     
   Write-Host "Set Readonly:" $Site.Url  
     
   Set-SPSite -Identity $Site.Url -LockState "ReadOnly"     
   #Set-SPSite -Identity $Site.Url -LockState "Unlock"   
}  
  
  
# Check ReadOnly Status  
foreach($Site in $SitesColl)  
{  
   $Mysite=Get-SPSite -Identity $Site.Url    
  
   Write-Host "ReadOnly Status:" $MySite.ReadOnly  
}  

See reference:
several site collection add into "Readonly" mode using powershell script

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