1. Determine and note the previous version number. Use the following Microsoft website to find the update version that is previous to the current version:
   Update history for Microsoft 365 Apps for enterprise (listed by date)

2. Download and run the self-extracting executable file from the following Download Center link. This file contains the Office Deployment Tool executable (Setup.exe) and a sample configuration file (Configuration.xml):
   Office Deployment Tool
   
   
3. Start Notepad and copy the following XML. Then, save the file as Config.xml in the same file location as the Setup.exe file from Step 2.

   <Configuration>
   <Updates Enabled="TRUE" TargetVersion="16.0.xxxxx.yyyyy" />
   </Configuration>

Note In the XML, 16.0.xxxxx.yyyyy represents the full version number that you noted in step 1.

Example Config.xml file for version 2104 (Build 13929.20386):

4. Open an elevated Command Prompt window. To do this, click Start, type cmd in the Start Search box, right-click cmd.exe, and then click Run as administrator. Switch to the file location for the Setup.exe and Config.xml files.
   
   
5. Run the following command:

   setup.exe /configure config.xml

   
   
6. Start an Office application (such as Excel), and then select File > Account.
   
   
7. In the Product Information section, select Update Options > Update Now.
   Note If you are prompted to activate Office again, enter your Microsoft account and password. This step does not add your computer to your account a second time.

This step is very important. Office automatically checks for updates on a regular basis. To prevent Office from automatically installing new updates, follow these steps:

1. Start Outlook.
2. Click File, and then click Office Account.
3. In the Product Information column, click Update Options button, and then click Disable Updates.