A reboot from a previous installation is pending

When update server or cumulative update in case of exchange updates you can get this error :

A reboot from a previous installation is pending. Please restart the system and then rerun Setup

The Server is reading the following registry keys to determine whether a system restart is required after installation or removal of a software update such as a security update, critical update, or hotfix.

HKLM\SOFTWARE\Microsoft\Updates\UpdateExeVolatile

HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\PendingFileRenameOperations

The Solution is :

To remove an orphaned UpdateExeVolatile registry key value

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.
  2. Navigate to HKLM\SOFTWARE\Microsoft\Updates\
  3. In the right navigation pane, double-click the UpdateExeVolatile key.
  4. Configure the key with a value of 0
  5. Close Registry Editor.

To delete the orphaned PendingFileRenameOperations registry key

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.

  2. Navigate to HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\
  3. In the right navigation pane, right-click the PendingFileRenameOperations key and select Delete.
  4. Close Registry Editor.

Now try again !


Good Luck

One Comment

  • Aziz says:

    Hi, I had was installing exchange setup on separate server not on domain, but it failed , so after that I removed the window server and reinstalled it, I also was reinstalling exchange server but when I run . Setup/prepared./organizationname….
    It state another rebbot is pending from previous installation what’s the solution?

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