Edge version 149 unable to do print preview and print due to URLAllowList and URLBlockList

Question

Edge version 149 unable to do print preview and print due to URLAllowList and URLBlockList

pong kien ping 10

Hi Microsoft Edge Support Team,

After updating Microsoft Edge to version 149, we are unable to open Print Preview and perform printing. During further investigation, we found that adding the following entry into the URLAllowList resolves the issue:

chrome-untrusted://print

Could you please confirm whether this behavior is expected in Edge version 149? Previously, we tested the same scenario on Edge version 148 and did not encounter this issue.

Please refer to the attached screenshot for more details.

Picture 1: Current URLBlockList setting

User's image

Picture 2: URLAllowList setting that does not work. Notice the print preview cannot load up

User's image

Picture 3: After adding "chrome-untrusted://print", able to work

User's image

0 comments

2 answers

Your answer

Answer 1

Jeronimo Fuerte 45,045 Independent Advisor

Hi! With URLBlocklist = *, Edge is configured to block all URL patterns unless they are explicitly allowed. URLAllowlist is intended to create exceptions to restrictive blocklists, and the allow list takes precedence over the block list.

However, I would not say that this is a specific Edge 149 print preview bug or intentional change, because Microsoft has not released a note that specifically says “Print Preview changed in Edge 149.”

But it does appear to be an expected side effect of using URLBlocklist = * with Edge internal pages, although the difference between Edge 148 and 149 may be due to an internal implementation change in the print preview page.

pong kien ping 10 Reputation points

2026-06-11T06:33:31.3066667+00:00

Hi Microsoft Edge Support Team,

From your reply, are you suggesting that I need to add chrome-untrusted://print into the URLAllowList as a permanent solution?

Since the URL contains the word "untrusted", it does not appear to be a legitimate or intended URL. Could you please clarify whether there will be a fix in a future Edge release?
Jeronimo Fuerte 45,045 Reputation points Independent Advisor

2026-06-12T22:54:17.21+00:00

For now, allowing chrome-untrusted://print appears to be the appropriate workaround. doesnt meant is a permanent solution.

I cannot confirm whether Microsoft will change this in a future Edge release, because Microsoft has not confirmed this exact behavior as a known Edge 149 print-preview bug.

Answer 2

Blocking Edge’s internal protocols, including edge:, about, chrome-untrusted, etc will interfere with the proper functioning of the browser and should be avoided, as noted in the documentation: https://learn.microsoft.com/en-us/deployedge/microsoft-edge-policies/urlblocklist

Trying to exempt specific URLs from these protocols is not a scalable or reliable approach. At a minimum, there should be URLAllowlist entries for the entire protocol (e.g. chrome-untrusted:*) but generally URLBlocklist’ing “*” is inherently going to require constant maintenance because the browser can use new URLs as a part of its internal operation at any time.