What's Happening

If your team uses Rent Manager Desktop through Remote Desktop (RDP), you may have run into this: someone tries to add a note or attachment to a tenant's file, and instead of saving, they get an "Access Denied" error.

It looks like a permissions issue — like the user's account isn't allowed to make changes. It isn't. The account usually has full permission the entire time. Something else is blocking the save.

Why It Happens

This issue is specific to how Rent Manager runs when it's delivered through Remote Desktop instead of installed directly on someone's computer.

Windows has a built-in security feature that controls how files move between a remote session and the device someone is actually sitting at. That feature is meant to protect you, but in this case it quietly stops Rent Manager from saving notes and attachments at all.

The application isn't broken. Windows is just being overly cautious in a way that gets in the way of a legitimate, everyday task.

The Fix

The fix is a single registry value that tells Windows to stop blocking that redirection. On the affected computer, an administrator needs to set:

Key: HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client
Value name: RedirectionWarningDialogVersion
Type: DWORD (32-bit)
Data: 1

Note: Before making the change, sign the affected user out of Rent Manager completely. Disconnecting the Remote Desktop session isn't enough — the fix won't take effect until they've fully signed out and back in.

Option 1: PowerShell (Fastest)

Open PowerShell as an administrator and run:

New-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client" -Name "RedirectionWarningDialogVersion" -PropertyType DWORD -Value 1 -Force

Then have the user sign back in to Rent Manager and test adding a note and an attachment.

Option 2: Registry Editor

1.Press Windows key + R, type regedit, and select OK (approve the admin prompt if it appears).

2.Navigate to HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client.

3.Right-click Client → New → DWORD (32-bit) Value.

4.Name it RedirectionWarningDialogVersion.

5.Open it, set the value to 1 (Hexadecimal), and select OK.

6.Close Registry Editor, sign the user back in, and test.

A Note of Caution

This fix requires Windows administrator rights, and editing the registry incorrectly can affect more than just Rent Manager.

If your team isn't comfortable making this change directly, it's a quick, low-risk fix for someone who is.

Request remote support from NTS to apply this fix for you

Scope: Rent Manager Desktop vs. Rent Manager Xpress

This fix applies specifically to Rent Manager Desktop accessed over Remote Desktop (RDP). It has not been validated for Rent Manager Xpress, which runs differently and may not be affected by the same Windows redirection policy.

If the Problem Continues

•Double-check that the user was fully signed out of Rent Manager — not just disconnected — before the registry change was applied.

•Confirm the RedirectionWarningDialogVersion value exists under the Client key and is set to 1.

•If the error is still happening, let us know whether it shows up on notes, attachments, or both — that detail helps us narrow down the cause fast.

The Takeaway

If your property management team keeps hitting "Access Denied" errors in Rent Manager over Remote Desktop, it's almost certainly this Windows redirection setting — not a problem with anyone's account. Now you have the exact fix.

If you'd rather not touch the registry yourselves, contact us and we can get it fixed for you in a few minutes.

See how NTS supports property management IT environments

Rent Manager "Access Denied" Error Over Remote Desktop: How to Fix It

Quick Answer