Instructions to solve Excel being slow in Windows 10

Below are the steps that worked for me in speeding up Excel.

  1. Log in to Windows 10.
  2. On your keyboard press the  Windows key + I (to get to Settings).
  3. Type Cortana.
  4. Click  Cortana and Search settings.
  5. Change the Hey Cortana setting to Off.
  6. Restart your PC.

Excel will now run far more quickly.

Here’s how to disable Cortana in Windows 10registry

  1. Press Win+R to open REGEDIT. Type in regedit and click OK.
    how to disable cortana on windows 10
  2. Navigate to HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows
  3. Locate the Windows Search key. If it doesn’t exist, create a new key named Windows Search by right-clicking on the Windows folder and choosing New > Key.
  4. Right-click on the Windows Search folder and choose New > DWORD (32-bit) value.
    how to disable cortana on windows 10
  5. Name this new DWORD AllowCortana, double click on it and set the value to 0.
  6. Reboot your PC.

If Excel freezes in every file. Try these steps.

Disable Hardware Graphics Acceleration Office 2010, 2013, 2016 Registry

  • Press Windows + R key together, type regedit in the Run dialog box and click Enter key to open the Registry Editor


  • Under the left-hand pane, navigate here:



  • Now, you should create the subkey to Common by right clicking over it and choose New and then, Key. Provide the name of this subkey as Graphics. In the right-hand pane of Graphics subkey, you can create a new DWORD by right click on the blank space and choose New and DWORD Value. After that, giving a newly created DWORD as DisableHardwareAcceleration and then double click on it to find out this:


  • In the above dialog box, you can change the Value data from 0 to 1. Press OK button. Close the Registry Editor and then, reboot the system to make some changes effectively.

Start Excel in Safe Mode

  1. Close completely out of Excel.
  2. Hold the Windows Key and press “R” to bring up the Run dialog box.
  3. Type excel -safe then press “Enter“.
    If Excel opens with the above steps, it is likely that a plugin or other software is installed that is interfering with the software. Proceed with step 4 to try to fix the issue. If you still experience problems with Excel started in Safe Mode, try the next set of instructions.
  4. Select “File” > “Options“.
  5. Select “Add-ins“.
  6. Select “Excel Add-ins” in the “Manage” drop-down menu, then select “Go…“.
  7. If any items are checked, try unchecking them, then selecting “OK“. This will disable Add-ins that may be causing the freezing.
  8. Close Excel, then launch it normally to see if that did the trick. If not, repeat steps 3 through 7, only try a different selection in step 6. Go through the list in the drop-down for “COM Add-ins“, “Actions“, and “XML Expansion Packs” and see if disabling items in those selections do the trick.

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