Sharepoint list items getting auto modified. All the lists seems modified by a single user. But when checked with the user, he hasn't accessed this list at all. And the modified time stamps are all the same. 100s of items got modified at the same time, which is not possible manually. Any help on this would be really helpful. Thanks


Is a timerjob updating the list items? Usually timerjobs run under the same user as the OWSTimer, but a custom timerjob might open the site using a specific UserToken or something similar...

Or is a feature overwriting/recreating the mentioned items during activation?

Some more information would be useful. Like: is it a productive system or your test environment?

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    Thanks for the response Markus. This is a production environment with over 1.5 lac users. How can I confirm that a timer job is responsible for this. Please advice. And i believe there is no feature as you asked. Thanks – Sp beginner May 18 '14 at 11:23
  • I mentioned features for development / testing environments, where lists could be recreated, when a feature is activated. – Markus May 18 '14 at 11:25
  • The correct timer job (if it really is a timer job causing the mentioned modifications), might be difficult to find. Are there any custom timer jobs? I would check them first! To find the correct timerjob, check if any last run time matches the modification time on the list items. The Get-SPTimerJob powershell command might be useful. It will print the last run time for all timer jobs. Be sure to use the SharePoint management Shell or to run Add-PSSnapin "Microsoft.SharePoint.PowerShell" first. – Markus May 18 '14 at 11:32
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    Okay. I'll try this and let you know the updates. Markus, is there any way to figure out why these modifications happened under this particular user. And please let us know of any alternative for get-sptimerjob using stsadm – Sp beginner May 18 '14 at 12:15
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    There is very high chances of this due to some custom code. Have a look at what all custom feature is installed at site collection or web application level. You should once check whether that list or site contains any custom SharePoint Designer Workflow which contains any impersonation step which might be doing this. – Ravi Ranjan May 18 '14 at 16:24

Had a similar issue. Turns out it was a synchronisation issue with Outlook. If you have a list or Calendar linked to Outlook, then all items will be modified during synchronisation. Remove the list/calendar in question from Outlook.

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