Author: Bob Lin

Case 1: The client just upgrades their ISP and most computers accessing Internet speed over 500 Mbps except one PC. After checking the Ethernet card, we find it is old and speed limit to 100 MB.

Case 2: When test computer speed, one of computers is slow than others. Replacing the able with cat5e cable fixes the problem.

Case 3: The client reports that their computers keep having slow or dropping problem randomly. We fixed the problem by update Cisco Switch firmware.

Case 4: We have tried above troubleshooting, but can’t fix the problem even after restarting the computer. Finally, we find the user s uploading 20GB files to OneDrive. Pausing the OneDrive sync fixes the problem.

Situation: The client keeps receiving Failure Notice when sending an email to her client: 552: 5.2.2 The email account that you tried to reach is over quota and inactive.

Troubleshooting: 4 reasons for “552 5.2.2 user quota exceeded” error

1. Email attachments

If an email account receives a lot of emails with large attachments, it can eventually fill up the email account of a user. This can lead to email delivery failures.

2. Trash folders

Many email clients have a setting that the deleted mails will remain in the Trash folder until they are purge deleted. This results in the Trash folder getting filled up.

Trash folder also adds on to the quota of an email account. But many users overlook this aspect, causing trash to get piled up and quota to exceed.

3. Email forwarders

Some users set up one or more email forwarders from their email accounts. If any of those forwarded email accounts exceed their quota, mails can get bounced from those accounts.

4. Mail server restrictions

Every mail server has certain restrictions on the mail delivery settings. This is to avoid a single user or spammer from abusing the server resources.

The restrictions include limit on mail account size, mail attachment size, message content size, etc. If any of these limits exceed in a mail that is sent, it leads to 552 error.

In our case, Email forwarders to inactive email address is the problem.

Situation: The client is in migrating their Office 365 Tenant. Some users report missing emails.

Troubleshooting 1: Use tracing message to find status of the email. Login Office 365 admin center>Exchange>Mail flow.

Troubleshooting 2: Check Quarantine. Go to https://security.microsoft.com/quarantine  and sign in. Select Quarantine.

When you delete emails from the trash in Gmail, the used storage space doesn’t immediately reduce because Gmail keeps those deleted emails in a temporary state for a certain period. This period is usually 30 days, during which the deleted emails are still recoverable by the user in case of accidental deletion or any other reason.

Here’s why the used storage space doesn’t reduce immediately after emptying the trash:

1. Retention Period: As mentioned earlier, Gmail retains deleted emails in the trash for about 30 days. During this period, the deleted emails still occupy storage space in your account.
2. Recovery Option: During the retention period, you have the option to recover any emails you may have deleted accidentally. This safety feature is in place to prevent permanent data loss.
3. Permanent Deletion: After the retention period (30 days), Gmail will automatically and permanently delete the emails from the trash, and at that point, the used storage space will be reduced accordingly.

If you need to free up storage space immediately after deleting emails, you have a few options:

1. Empty Trash Permanently: To permanently delete the emails and free up storage immediately, you can go to the trash folder and click on “Empty Trash now” or “Delete forever.” Be absolutely sure that you won’t need to recover any of the deleted emails before taking this step, as deleted emails cannot be recovered after they are permanently deleted.
2. Clear Other Folders: Check other folders like “Sent,” “Spam,” or custom labels you might have created. Emails in these folders also contribute to your used storage. Deleting unnecessary emails from these folders can help free up more space.
3. Attachments: Large email attachments can consume significant storage space. Consider deleting emails with large attachments or save those attachments to your local storage or cloud storage and then delete the emails.
4. Buy Additional Storage: If you consistently find yourself running out of storage, you can consider purchasing additional storage from Google. This option allows you to expand your storage capacity in Gmail and other Google services.

Keep in mind that even after permanently deleting emails, your storage usage may not reduce instantly due to server-side processes. However, you should see the reduction in storage usage reflected in your account within a reasonable time frame.

Situation: The client would like to sync their SharePoint to a local server. When they attempt to install OneDrive on Windows Server 2012 R2, they get “OneDrive cannot installed” and can’t continue.

Resolution: installing Deferred version and it was successful.

Please try installing version 21.230.1107.0004 of Deferred ring and you should be able to install OneDrive sync app.

Situation: The client is in processing their Microsoft Tenant migration.  The configured to forward email from new email address to old email address. However, some emails, especially verification emails.

Resolution: Keep emails in both old and new email addresses by checking Keep a copy of forwarded email in this mailbox.

Situation: The client just upgraded their Veeam V11 to V12. the upgrade is successful. However, the backup doesn’t work with this error: Resource not ready: gateway server. Unable to allocate processing resources. Error: Cannot find available gateway server for repository.

Resolution 1: Please refer to this post:

• Veeam error: Resource not ready: gateway server

Resolution 2: If resolution fixed “Resource not ready: gateway server” but you still receive “Unable to allocate processing resources. Error: Cannot find available gateway server for repository.” you may want to re-configure Gateway Host.

1. Go to Backup Infrastructures. Click on Backup Repositories and then select the backup repository.
2. In Share, switch Automatic selection to The following server.

3. Select Use the following gateway server only and check the server you prefer to use.

4. Click on Finish and test the backup.

Resolution 3: Re-create backup Repository.

Situation: The client just upgraded their Veeam V11 to V12. the upgrade is successful. However, the backup doesn’t work with this error: Resource not ready: gateway server.

Resolution: It could be Veeam Backup Proxy configuration. Go to Backup Infrastructures. Click on Backup Proxies. By the default, Max concurrent tasks is 2. You may want to increase for a test.

Situation: you may receive this message when login office 365: Your organization has deleted this device with error code 700003

Resolution 1: Login Office.com to use online Office apps.

Resolution 2: Disconnect the problematic account

Disconnecting the account that triggered error 70003 is another quick solution that could potentially solve this problem.

1. Open the Settingsapp
2. Go to Accounts
3. SelectAccess work or school
4. Find the account that you can’t use and select Disconnect
5. In the popup for login, type your local administrator credentials or your office 365 global administrator email address with the password.
6. Restart the computer and login
7. Try to login to Office again using your regular username and password.

Note: you may lose your local computer profiles.

Resolution 3: Delete the problematic account

If disconnecting the account didn’t work, you can try to delete it from your computer.

1. Launch the Settingsapp
2. Navigate to Accounts
3. Select the Access work or school option
4. Delete the account
5. Restart the computer and login
6. Sign into your Outlook profile again.

Resolution 4:  Remove the device completely

This solution is a complex one. Use it only if you’re an advanced user or an IT admin.

1. Disable group policy for automatic device registration.
   • If the respective setting is already configured in your environment, you should find it on the machine. If the entry is not available, that means it’s not configured on your machine and you don’t need to do anything.
2. Download the Psexec tooland extract it to the PSTools folder
3. Launch Command Prompt as an administrator
4. Open the PSexec folder
5. Run the psexec -sid cmd.execommand
6. A new command prompt will appear on the screen (in a system context)
7. To un-register the device, run the dsregcmd /leavecommand
8. Restart your machine
9. Check your machine’s status using dsregcmd /status.

Resolution 5: Remove the account and the device

This solution is some sort of a hybrid between the third and the fourth solutions. For some users, utilizing the respective solutions individually didn’t work. But they were able to fix the problem after combining steps from both the methods.

Here’s what you need to do:

1. Go to Settings → Accounts → Access Work or School and remove the account
2. Launch Command Prompt or PowerShell as an administrator
3. Enter the dsregcmd /leavecommand
4. Enter the dsregcmd /statuscommand to make sure the device no longer appears listed under Azure AD
5. Register the problematic device again.

Resolution 6: unregister a device from Azure AD

For hybrid Azure AD joined devices, make sure to turn off automatic registration. Then the scheduled task doesn’t register the device again. Next, open a command prompt as an administrator and enter dsregcmd.exe /debug /leave.

Note: Deleting devices in your on-premises AD or Azure AD does not remove registration on the client. It will only prevent access to resources using device as an identity (e.g. Conditional Access). Read additional information on how to remove registration on the client.

Situation: When attempting to sing Microsoft Teams using your work email, you may receive this message: You can’t sign in here with a work or school account.

There are two Microsoft Teams, one for work and another for personal. If you type teams in the search, they are popup. Select Microsoft Teams (work or school).