Summary

If your gotomyerp RemoteApp shows "An authentication error has occurred (Code: 0x80080005)", your PC most likely has the January 13, 2026 Windows 11 security update (KB5074109). To fix it, update Windows to build 26100.7627 / 26200.7627 or later.

The error looks like this when you open a published app:

The dialog says sign-in credentials could not be verified and mentions recent security updates. Your gotomyerp password is not the problem, so don't reset it. The problem is a bug in that Windows update.

Cause and affected versions

Microsoft's January 13, 2026 security update broke the sign-in step for Remote Desktop apps, including the Windows App and RemoteApp connections to Azure Virtual Desktop. Microsoft fixed it four days later in an out-of-band (OOB) update. Every cumulative update since then includes that fix.

Only Windows 11 versions 24H2 and 25H2 are affected. Windows 10 and earlier Windows 11 versions did not get this update.

Step 1: Check your Windows build

Your PC is affected if its build ends in .7623. If it ends in .7627 or a higher number, it already has the fix, so contact support instead.

1. Press the Windows key + R, type winver, and press Enter.
2. Read the line Version 24H2 (OS Build 26100.xxxx) or Version 25H2 (OS Build 26200.xxxx).

Step 2, Option 1: Update Windows (recommended)

Installing the latest Windows cumulative update is the simplest fix. Every update released after January 17, 2026 includes the fix.

1. Select Start > Settings > Windows Update.
2. Select Check for updates.
3. Install everything listed under the latest Cumulative Update for Windows 11. If you see Pause updates turned on, select Resume updates first.
4. Select Restart now when asked.
5. Run winver again and confirm the build ends in .7627 or higher.

If the PC is managed by your company's IT team (WSUS, Intune or another tool) and updates are held back, ask them to approve the latest cumulative update, or use Option 2.

Step 2, Option 2: Install the out-of-band update KB5077744 manually

Use this when Windows Update is blocked or held back. KB5077744 is not offered through Windows Update or WSUS, only through the Microsoft Update Catalog. You need local administrator rights.

Download the update

1. Open the Microsoft Update Catalog search for KB5077744.
2. Select Download next to the entry that matches your PC: x64 for most PCs.
3. Save the .msu file to a new folder named C:\Packages.

For x64 the file is named windows11.0-kb5077744-x64_fb63f62e4846b81b064c3515d7aff46c9d6d50c8.msu.

Install it

Right-click Start, select Terminal (Admin) or Windows PowerShell (Admin), and run one of these commands.

With DISM:

DISM /Online /Add-Package /PackagePath:C:\Packages\windows11.0-kb5077744-x64_fb63f62e4846b81b064c3515d7aff46c9d6d50c8.msu

With PowerShell:

Add-WindowsPackage -Online -PackagePath "C:\Packages\windows11.0-kb5077744-x64_fb63f62e4846b81b064c3515d7aff46c9d6d50c8.msu"

The install can take 10 to 30 minutes. When it finishes, restart the PC (DISM asks Restart Windows to complete this operation? (Y/N); press Y).

Prerequisite (only for older PCs)

Microsoft lists checkpoint update KB5043080 as a prerequisite. A PC already on build .7623 has it, so you can skip it. If DISM reports the package is not applicable, download KB5043080 from the Catalog into the same C:\Packages folder and rerun the command; DISM installs both in the right order.

Step 3: Confirm the fix

1. Run winver and confirm the build ends in .7627 or higher.
2. Open the GoToMyERP app again and sign in.

Contact GoToMyERP Support if the error continues on build .7627 or later, or if the update fails to install. Include your Windows build number, the time of the error, and a screenshot of the dialog with See details expanded.

Sources

• KB5074109: January 13, 2026 security update (OS Builds 26200.7623 and 26100.7623)
• KB5077744: January 17, 2026 out-of-band update (OS Builds 26200.7627 and 26100.7627)
• Microsoft Update Catalog: KB5077744