Thank you so much, this version works great for me.

I`m sorry for the lack of testing…busy times at work these days

I`ve re-published the script here: http://poshcode.org/2386

I`ve added a -FirstRun parameter that let`s you backup all GPO`s on first run, and also added some additional logic.

Will probably re-write the script as an advanced function some time in the future.

I’d really like to have this in my environment, but don’t have the PS skills required to know what to change.

I`ve updated the link in the blog-post.

Thanks Andy!

thank you so much for the prompt reply. I did as suggested and removed “| Where-Object {$_.ModificationTime -gt $Timespan}” added it back, ran the script again and receive the same errors.

Does it have to do anything with the fact that the timespan of 24h didn’t pass?

I see that the script requires an initial backup to be in place of all GPO`s. I`ll make an update to the script to fix this automatically.
Until then, remove “| Where-Object {$_.ModificationTime -gt $Timespan}” from the $ModifiedGPOs variable on first run. Afterwards, set it back to:
$ModifiedGPOs = Get-GPO -all | Where-Object {$_.ModificationTime -gt $Timespan}

I should`ve tested this on a fresh system before publishing it…”note to self”

I’d appreciate your assistance.