I just did a full update to Portable Chrome. As soon as I opened it I noticed a distinct slowness but that is not my complaint. What is my complaint is that when I try to save a page either by Ctrl+S or by right-clicking Save as... it totally FAILS to popup a save dialog. It also does not matter what the page is, this is a universal failure.
I am using 64-bit Win 8.1 with 6GB of RAM and I shut down all other major applications to ensure no conflicts. It was working fine before I upgraded and then it simply stopped working. My old version was 75.0.3770.90 (it has been awhile since I updated last).
How can I downgrade the version and still retain my profile/history/passwords/etc ?
I did some digging and found the following procedure which worked to back out of the upgrade. Please note that this requires you to have a good backup of the entire PortableApps\GoogleChromePortable folder with the old version of PortableApps' Chrome. It also requires that you must have Chrome's automatic update feature turned OFF (which is normal for the PortableApps version since updates are done through the launcher). If it is on, turn it off before starting this procedure.
Go to the NEW (technically the current) GoogleChromePortable folder and delete everything EXCEPT the Data folder.
Go to the OLD (the backup) GoogleChromePortable folder and copy everything EXCEPT the Data folder over to the NEW folder.
Now go look in the NEW folder (use the path below) for a file called "Web Data" and either delete it or rename it.
[ \PortableApps\GoogleChromePortable\Data\profile\Default\ ]
You should now be able to start Chrome from the launcher as usual with your profile data intact and no errors. It may take a minute or so to load as Chrome has to rebuild/adjust for the missing Web Data file.
I tried both the 32-bit and 64-bit builds of Google Chrome Portable 91.0.4472.101 on Windows 8.1 64-bit and they both were able to Save As without issue. It's likely something else is going on. What's the full path you're running Google Chrome Portable from? Have you tried a fresh install to your desktop temporarily to see if a clean install has the same issue? That will help narrow down whether it is an OS issue or an issue with your specific install.
Sometimes, the impossible can become possible, if you're awesome!
OK, so when I exited Chrome I found that 3 processes were left running an hour later. 1 being the PortableChrome process and the other two being generic Chrome processes (about 100M and 30M in size). The last time I saw that was when Google had a problem downloading a file due to network issues. As far as I can tell Chrome tried to reach out and update an extension and our network blocked the request somehow (our admin is wacko, he has things set up so that only about half of youtube videos are available and the rest are "restricted" but with no rhyme or reason). Once the download was "in progress" (but not really) there was no ability to trigger the save dialog. It basically barricaded the download process. Once I did my "rollback" everything worked fine. My guess is the bug is the latest Chrome not handling the rejected network request correctly and going into a loop with no alert to the user.