Cannot start IIS website - Exception from HRESULT: 0X80070020


Cannot start IIS 10 site on Windows 10 Pro. Following error message is displayed when trying to start the website:

The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)

WindowsUpdate.admx on Server 2012 (Windows 10 upgrade pop-ups on domain PCs)

After widespread criticism of unusually aggressive push to upgrade consumers to Windows 10, Microsoft decided that this was not enough and announced that very soon domain joined PCs will start "enjoying" similar notifications / adverts. In order to get these notifications, domain-joined PCs must meet following requirements:

  • Be running Windows 7 Pro or Windows 8.1 Pro OS. Enterprise versions of Windows are not eligible for free Windows 10 upgrade.
  • Receive updates directly from Windows Update (not from WSUS).

Most of businesses I support receive updates from WSUS, so this in not a concern for them. However, there is one very small office running Windows Server 2012 Foundation, and their PCs receive updates directly from Windows Update (WSUS is not even available in Foundation). 

Shadow copy errors on Exchange 2010 server (ESE - 2007 and VSS - 9702)

Every night, at the same time Exchange 2010 server records following two errors in Application Logs:

Source: MSExchangeIS
Event ID: 9702
Level: Error
Task Category: Exchange VSS Writer
Description: Exchange VSS Writer (instance c939cecf-f703-4a02-b5ec-3a08606eeefb:67) failed with error code 1295 when processing the post-snapshot event.


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