Indesign 2026 version 21.0.1

Hello @David34878996c4r9,

I appreciate you sharing this. In addition to the expert recommendations, if the problem persists after following those steps, please consider trying the solution provided in this related community thread and inform me if it proves helpful: https://adobe.ly/489110K

Once you have the opportunity to test it, please let me know the outcome, so I can investigate further.

I look forward to your update.

Abhishek

It is always a good idea when upgrading a version of InDesign to reset preferences. Using old preferences with a newly coded version of the program is a recipe for bad performance. Resetting the preferences will restore the program to its defaults and hopefully fix the issues that you're having.

To reset preferences on Windows:

You can try the quick way of resetting on a PC which is to hold down Ctrl + Alt + Shift when launching InDesign and respond affirmatively when asked if you want to reset. There have been some recent reports that the window asking if you want to reset is not popping up but that the prefs are being reset anyway. If this works great but if it doesn’t you may have to manually delete them. 

To do so:

On Windows 7 and above the preference files are hidden. To find them go to the Control Panel and open Folder Options and then click the View tab. Then select “Show hidden files and folders” or “Show hidden files, folders or drive options” in Advanced Settings. Then delete (or rename) the folder at the end of this path: C:\Users\<USER>\AppData\Roaming\Adobe\InDesign\<Version #>\<Language>. Make sure that InDesign is closed when you do this. When you relaunch the program it will create  new preference files and the program will be at its default settings.

The advantage of manually deleting preference files is that after you’ve reset up the program (make sure that no document window is open) to your liking, you can create copies of your personalized “mint” preference files (make sure that you quit the program before copying them—that finalizes your customization) and use them in the future to replace any corrupt versions you may need to delete.

Do other apps launch and run ok? If so, it might be the one app is corrupted.

You might try opening a windows command prompt. Open Command Prompt as an administrator and type sfc /scannow to check for and repair corrupted system files. 

Or you might do an InDesign Reset Defcon 4 where you uninstall it, removing all preferences, run the CC App Cleaner tool, and reboot, and re-install. Read about this in this compendium of troubleshooting.

Also, generally good chicken-soup is to delete everything in the 2 "Temp" folders that windows relies on for running things.