DLA Information Operations

“How To” Guide

How to Install InstallRoot 5.5 (3/22/23) Page 1 

OPR: J63B

How to Install InstallRoot 5.5

Some users may intermittently experience connection errors when authenticating to Citrix Storefront. An example error 

most commonly seen is shown below: 

If you receive this error, please follow the steps below to install InstallRoot 5.5. This will install the latest DoD Root 

Certificates on your local machine. 

Installing InstallRoot 5.5 

1. Download the latest version of InstallRoot (5.5) from https://public.cyber.mil/installroot_5-6/
How to Install InstallRoot 5.5 Page 2

2. Navigate to the Downloads folder on the local machine, and double click the installer file.

3. Click Run at the next screen.
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4. On the InstallRoot Setup screen, click Next >.

5. Select the desired installation location. It is recommend to use the default folder location. Click Next >.
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6. Under InstallRoot Features, leave all default options selected. Click Next >.

7. On Begin installation of InstallRoot screen, click Install.
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8. The Installation Progress screen will appear. The installation may take several minutes to complete. You may be 

prompted by a User Account Control pop up, select Yes. 

9. Some users may experience the installation errors stating they do not have permissions to proceed with 

installation. This most commonly happens on company-furnished equipment (CFE) endpoints. This should not 

happen as often on personally owned computers and endpoints. If users receive the message below, have the 

user contact their company IT Help Desk team to have them install this software with an Administrator account.
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10. Once you see the “InstallRoot has been successfully installed message,” click Run InstallRoot.

11. Click Restart as Administrator to restart the application with Administrative privileges.

12. Click Online Update to check for any application and certificate updates. You should see a status message 

indicating whether any new updates were applied.

Once you click on Online Update, wait for any applicable certificate updates to download and apply. If no 

updates are found, you will see a message like the one below.
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13. Click Install Certificates.

14. Once the certificates are installed successfully, you will see a “certificate installation successful” message. If the 

certificates were already installed, you may not see a message.

15. If you see the error below, click OK and attempt to have the user sign into Citrix Storefront. Seeing this error 

generally will not affect overall certificate installation, you may click OK to disregard. If they are still 

unsuccessful, please have the user contact their company IT Help Desk team to have them install this software 

with an Administrator account.
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16. After installation is complete, close InstallRoot, reboot the endpoint and try to sign into VDI again. If the user 

still receives the aforementioned SSL error, have them contact their company’s IT Help Desk team for further 

assistance (if on a CFE laptop). We do not officially support personally-owned home equipment. Alternatively, 

the user may also request a UMC laptop by submitting a request on the Service Portal.

DISA GSD Email (non-urgent ticket requests)

Report an Incident (non-urgent ticket requests)