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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 71%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3E9%3C/text%3E%3C/svg%3E)
When I enable the New PDF Viewer feature flag in Microsoft Edge, a password-protected PDF fails to open. The password prompt appears, but after entering the correct password it just prompts again. The same PDF opens correctly in:
Please advise whether this appears to be a browser regression or a file-specific issue, and if there is a workaround besides disabling the flag.
Edge version: 142.0.3595.94 (64-bit)
Opening and reading PDF files in Microsoft Edge on Windows 11
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 84%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAS%3C/text%3E%3C/svg%3E)
Then the only conclusion is that something is wrong with the PDF file itself password_is_password.pdf
Most likely, either the password is not "password", or the internal structure of the file is broken.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(51.2, 32%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPV%3C/text%3E%3C/svg%3E)
Adobe Reader does open this sample file though, using the supplied password of "password".
I wonder if the encryption scheme is invisibly salting it in some way, and the string used for encryption is actually something else, a process Adobe Reader knows about and reverses by inputting the same salt when reversing it.
Or padding paswords with characters <32 in length with spaces, nulls, or something else?
Hello, TERU
All flags in edge://flags/ - experimental ones. And they can lead to bugs, etc. There is a warning about this on the flags settings page.:
Here's the flag "New PDF Viewer" turned out to have "special features"...
I recommend that you report the flag bug to the developers via the browser menu "..."->Help and Feedback->Send feedback.
Thank you for the response.
I am sorry I forgot to include an important detail. Although I enabled the New PDF Viewer flag to reliably reproduce the behavior, I have confirmed the issue also occurs in an environment with default settings (no changes in edge://flags).
I still do not know the root cause of this issue or the exact conditions that trigger it. For now, I am providing some environment details from a system where the problem reproduces.
You shared the PDF file in the first message.:
I wanted to reproduce the problem, but I don't know the password :) I assumed that the password was "password" (judging by the file name), but it says that the password is incorrect.
The password is indeed "password".
What you are seeing (Edge reporting the password as incorrect / prompting again) is exactly the issue I am trying to resolve. It sounds like you have successfully reproduced the problem. Please confirm that the same PDF opens normally in other viewers.
It's very strange... I created my own PDF file for the test. And I have it open normally with any New PDF Viewer flag. Check on your PC: https://1drv.ms/b/c/fc85730a4b96d589/IQBEX2BHPwzdQa9huJQkG5unAeV1vfb6TQK8IhGGT9gKGII?e=Lgq9WS
The password is 123456. Write about the result.
Thank you for your investigation.
I opened the PDF in every viewer I could think of, and it worked fine in all of them.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 23%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMM%3C/text%3E%3C/svg%3E)
A customer group reported difficulty to open password protected PDFs in edge. I narrowed it down to limitations in Edge with the flag on that it only accepts password up to 32 characters in length.