Why Is Excel So Slow After the June 2025 Update? (Troubleshooting Guide for a Smooth Experience)

Can You Fix Excel Freezing Problems Fast? (Simple Solutions for Annoying Slowdowns)

I see how hard it is when Excel just won’t open fast or keeps freezing. I want to help you fix this so you can get back to your work without waiting or worrying. Let’s look at why Excel might slow down after the June 2025 updates and what you can do to make it better.

What’s Happening With Excel?

After the June 2025 update, many people noticed Excel started to freeze or open very slowly. Sometimes, it wouldn’t close right away. This problem happened on more than one computer. It made work harder for a lot of people.

Who Found the Problem?

Liam W. told me about this first. He got messages from people saying Excel was slow or stuck. He looked online and saw others were having the same trouble. Some people wrote about it on blogs and forums. They all wanted to know why Excel was acting up.

What Did People Try First?

Some thought the problem was with an add-in called Adobe PDF Maker. This add-in helps make PDF files from Excel. When people turned off this add-in, Excel got faster. Here’s what happened:

• Excel opened in 30 seconds before.
• After turning off Adobe PDF Maker, it opened in just 2 seconds.
• Blank pages that took 10–15 seconds to load opened right away.

If you want to try this, you can turn off the add-in called PDFMOfficeAddin.dll (version 25.1.20531.0 from June 6, 2025). This might help your Excel run better.

Was That the Only Problem?

Turning off the Adobe PDF Maker helped, but not for everyone. Some people still had slow Excel even after removing that add-in. That made Liam look for another reason.

What Else Could Cause Excel to Freeze?

Liam found out that Trend Micro Worry Free Business Security (TM WFBS) could be the problem. This is a program that keeps computers safe from bad software. The version that caused trouble is 6.7.3981/14.3.1311.

Here’s what happened:

• After the June 2025 update, Excel slowed down or froze.
• The computers had Trend Micro TM WFBS version 6.7.3981/14.3.1311.
• When Liam put back an older version (6.7.3981/14.3.1299), Excel worked fine again.
• It looks like Trend Micro took away the bad update, so not everyone got it.

What Should You Do?

If Excel is slow or freezing, try these steps:

Solution 1: Turn off Adobe PDF Maker Add-in

1. Open Excel.
2. Go to File > Options > Add-ins.
3. Find “Adobe PDF Maker” and turn it off.
4. Restart Excel and see if it’s faster.

Solution 2: Check Trend Micro Version

1. Open the Trend Micro program.
2. Look for the version number.
3. If you see 6.7.3981/14.3.1311, try to go back to 6.7.3981/14.3.1299.

You might need help from your IT team to do this.

Solution 3: Ask for Help

• If you can’t fix it, tell your IT support or admin.
• Share what you tried and what versions you have.

Why Does This Happen?

Sometimes, new updates for programs don’t work well together. Excel, Adobe PDF Maker, and Trend Micro all try to help you, but sometimes they get in each other’s way. That’s why it’s important to check for updates and see if turning off add-ins helps.

How Can You Prevent This?

• Keep your programs updated, but check if others have problems before you update.
• Turn off add-ins you don’t use.
• Talk to your IT team before making big changes.

You don’t have to let slow Excel stop you. Try turning off the Adobe PDF Maker add-in. If that doesn’t help, check your Trend Micro version. Going back to an older version can fix the problem. If you need help, ask your IT team. You can get Excel working fast again.