Unable to update list item - Additions to this web site have been blocked

Question

I am developing a SharePoint job. In the public override void Execute(Guid targetInstanceId) method, my code goes:

SPSecurity.RunWithElevatedPrivileges(delegate()
{
  int count = this.WebApplication.Sites.Count;
  for (int i = 0; i < count; i++)
  {
    using (SPSite site = new SPSite(this.WebApplication.Sites[i].ID))
    {
      using (SPWeb web = site.OpenWeb())
      {
         web.AllowUnsafeUpdates = true;
         documentLibraries = web.GetListsOfType(SPBaseType.DocumentLibrary);
         foreach (SPDocumentLibrary documentLibrary in documentLibraries)
         {
           foreach (SPListItem document in documentLibrary.Items)
           {
             document[periodicReviewStatusField] = "Review is needed";
             document.UpdateOverwriteVersion();
           }
         }
         web.AllowUnsafeUpdates = false;
      }
    }
  }
});

My code fails on the first document update in the line document.UpdateOverwriteVersion(); with the error message:

Additions to this Web site have been blocked. Please contact the administrator to resolve this problem.

I know for a fact that the site collection is not locked (which was the only answer I found online) and that there are no locks on any of the documents. Can you help me resolve this? It's killing me for a couple of days now ...

Answer 1

Have you gone through all solutions provided here ?

or

check the document library settings and find out that document library was set NOT to require check out although versioning was enabled. Just try to set to require check out.

Note:

RunWithElevatedPrivileges only works if the current thread is using impersonation, i.e. IIS. Used in other code (timer jobs, console applications, workflow, etc.) it will have no effect. By default the timer service runs as the farm service account specified in the Configuration Wizard. You can verify this in Windows Services.

Source

Answer 2

u can use item.SystemUpdate()

UpdateOverwriteVersion() gives the error you mentioned if the item's version is published