Run the prescan before installing the update

• Newer Sage 100 versions prompt you to scan data files before installing a product update.
• The prescan checks for changes to data tables and helps prevent update failures.

Let the prescan finish before updating

• Always let the prescan run before installing the update.
• If it finds issues, it shows a summary so you can fix them.
• Fix issues by rebuilding key files or sorting files, then re-run the update.
• Skipping the prescan can cause the update to fail or get stuck.
• There’s no undo option. You’ll need to restore from your backup if the update fails.

 NOTE: The prescan can take time depending on your data size, history files, and number of companies. 

Preparation

Before installing the product update:

1. Backup ...\MAS90\ folder
2. If you have any customizations to your Sage product:
   • Contact your Sage Business Partner or Master Developer before installing
3. Unless stated otherwise, each product update includes all previous updates for this version
4. Be sure to review any related fixes for the product update, under Known Issues

Download Product Update

1. Log into Sage Support Knowledgebase.
2. Select My Downloads in the upper right corner and chose Sage 100.
3. Scroll down to the Latest Updates section and search for the desired update.
   NOTE: You can also search for update using the Search option.
4. Download update to a location on your server where you have Sage 100 installed.

Installation

1. Make sure ALL users are out of Sage 100.
2. Browse to the location where you downloaded the update and install the update.
3. Follow the steps in Installation Wizard to complete installation.

Post Installation (Data Conversion)

1. Log into Sage 100.
2. Open Library Master, Main, Company Maintenance.
3. Select a Company from the Company Code field or select Next button.
4. Select Convert in the upper right corner.
5. Select checkbox 'Convert Data for ALL Companies'.
6. Select Proceed.
7. Exit Company Maintenance after you've converted your data.

How to install Workstation Setup for Sage 100
Sage 100 Update Release Schedule
How to determine the version and product update of Sage 100 installed