Outlfltr could not be installed error code 1603

For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:. How to back up and restore the registry in Windows.

Hope this information is helpful and do let us know if you need further assistance. We will be glad to help. I had 13 "important" updates to apply. Any advice will be appreciated. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Report abuse. Details required :. Cancel Submit. Hello Bob, Thank you for choosing Microsoft Community.

How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. In reply to A. User's post on December 11, Jayant, I tried all 3 methods as described above, but still get the Windows Update error. Hello Bob, First we appologize for late response. MSI package formats are used to install or remove the software. When Windows fails to install the software as it should be, the user will end up with error Software running in the background can prevent Windows Installer from installing programs, and by closing the apps running in the background you can get rid of the error fast.

You can locate programs running in the background by opening the task manager. Then you can attempt to install the new program. Every application comes with the minimum space requirements, including Hard Disk Space and RAM, you need to check and see whether your PC has met the requirements. The next thing to do now is to erase temporary files using Disk Clean up tool, there are of course other methods, but using the disk clean up tool is faster.

Here is how to do it. You can locate programs running in the background by opening the task manager. Then you can attempt to install the new program. Every application comes with the minimum space requirements, including Hard Disk Space and RAM, you need to check and see whether your PC has met the requirements. The next thing to do now is to erase temporary files using Disk Clean up tool, there are of course other methods, but using the disk clean up tool is faster.

Here is how to do it. This simple Microsoft tool has proven to fix the error fatal error during installation with a few clicks.

Here is how to do that:. Select that to launch the Command Prompt Windows.