Office programs won't save to the root of C:

OK. Most of it is Windows 10 and is by design but I have a user that insists on saving Word and Excel files to the root of C:. You can copy files to the root of C: (with a warning about permissions) but Office programs like Word and Excel flat out won't let you do it. I am guessing that might be a setting in Office. Anyone know?
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☠ MASQ ☠Commented:
You can do this but you'd have to give their account absolute permissions to write to any location which has massive implications for the vulnerability of their data.  I guess you wouldn't be asking if you hadn't already tried to warn them about the risks?

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LockDown32OwnerAuthor Commented:
Yes. I told them it wasn't a good idea to save things in the root of C: anyway. This guy is an administrator of his local computer and if you look administrators have full permissions on C:. You can copy files to the root of C: (Excel files, Word file, Adobe files, etc.) You just can't "save as" in any of the programs. I was hoping it would be something simple.....
Tom CieslikIT EngineerCommented:
It is not possible ? it is but it will cost you a problems.
If you still need to do it you must open Explorer
Right click  on C drive and go to properties /security / advanced
You need to Own root of C drive fo you must go to Owner Tab
Hit Edit
Change Owner from TrustedInstaller to Yourself
Click OK
Hit Change Permissions
Add user and assign Full rights

You'll get 3 errors about hidden folders and pagefiles or bootmgr if you have one on C drive but from now if you righ click on C drive of go to NEW, you'll see other options so try create txt file. It should work now.
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LockDown32OwnerAuthor Commented:
It has been a while since I played with it. When first going to Windows 10. Something sticks in my head that it was easier to make the user a member of the "TrustedInstallers"? Where can you see the "TrustedInstaller" user or group?
Tom CieslikIT EngineerCommented:
There is no way to add anyone to TrustedInstallers, since this is not Local Group you have access to
Insisting on saving to c: ...LOL!

Ok, this problem is old and full of misunderstandings. It's not particularly dangerous to change the access permissions for the root of c:. Microsoft has changed these permissions starting with windows xp and further restricted them with vista. Nothing new from then on. It is not only NTFS permissions but mandatory integrity levels as well - permission changes are not enough. See for a solution.
Dr. KlahnPrincipal Software EngineerCommented:
Tell the user:

"Yes, this can be done.  But it is a non-standard configuration, it is dangerous, and you need to understand this from our point of view.  Our remit is to make sure all machines work, yours included.  If we make this change and anything goes wrong on this machine, anything at all, no matter what it is, hardware or software, even if it is unrelated to this particular issue, IT is going to say "This is that non-standard machine and we don't support it." It will be your problem to solve, on your own time, at your own expense, and it had better not take any time out of your normal work hours.  IT supported machines rest on a standard configuration, both hardware and software, and yours won't be standard any more.  We will no longer push updates to your machine or upgrade the hardware.  You will be alone as far as support goes and it will be your job to keep your machine compliant with the rest of the company, again on your time, at your expense, and not during work hours.  We'll prominently red-tag the hardware "IT NON-SUPPORTED."  We'll also advise Security that this machine may be a risk to the company network.  If you want to go ahead on this basis, sign this memo of understanding and have your supervisor sign it as well.  Then we will make the change."
LockDown32OwnerAuthor Commented:
The user did finally listen to reason.
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