Cannot open new files after 2026 update

Hello everyone,

I appreciate the update. Please attempt to change the file association for your INDD files to make sure they open with InDesign 2026, and then test the issue once more. Occasionally, Windows may continue to associate files with an older version even after an upgrade, which could lead to the behavior you're experiencing. You can refer to the instructions in the guides found here: https://adobe.ly/4r8ymBB and here https://adobe.ly/49wCntv or here https://adobe.ly/4phmBXW

After you update the association, try opening your files again and let me know if everything starts to work.

Abhishek

I have the same problem! Two days ago I started noticing weird stuff happening with my INDD files, and discovered that my CC had installed ID2026 in addition to 2025, and I suddenly had TWO versions installed. (Also double versions of Illustrator and Photoshop). CC usually just upgrades and keeps ONE active version. I noticed error messages when I tried opening some files, and thought uninstalling the older version and rebooting the computer would help. I kept only the 2026 version. 

This is where it gets really weird. I was able to continue working on the three files I had created during the day, using ID2026, but then discovered that it will not open any of my hundreds of docs created in the previous version!! So now I have to reinstall the 2025 version, and potentially scrap the newer one, until Adobe gets their stuff together and presents a functioning upgrade. I can see why you wouldn't be able to open a newer doc in an older version, but opening older docs in the new upgraded version should always work!

Hi @dandyjack,

Sorry about the trouble. Could you please try manually resetting your InDesign preferences and check if that helps? You can follow the steps here: https://adobe.ly/4hSvGUz.

If the issue persists, please try renaming a couple of folders to refresh the internal configuration. Rename the CEP folder to CEP.old from this location:
C:\Program Files (x86)\Common Files\Adobe

If that doesn't help, rename the UXP folder to UXP.old from the following locations:
C:\Program Files\Common Files\Adobe\
C:\Program Files (x86)\Common Files\Adobe\

Once done, relaunch InDesign and try creating a new document again. Please let me know if this resolves the issue.

Looking forward to your update.

Abhishek

Apologies it is the 21.0 update and after uninstalling/reinstalling, nothing is fixed. Same with the 20.5.1 version after this update.