I have a Dell computer with the wireless adaptater “Qualcomm QCA61x4A 802.11ac” which supports Wifi in 5GHz. However, I’ve recurrent deconnections when being connected to my 5GHz network, even if all my other devices don’t have any issues. It works well with the 2.4GHz network.

I’m on Windows 10 and after trying many different things, I found a workaround:

1. Open a CMD window (by pressing Windows key + X, then select Windows PowerShell (Admin))
2. Then type: netsh wlan set autoconfig enabled=no interface="Wi-Fi"
3. You won’t see any WiFi network anymore from the Wifi icon, but it stops the issues with the connectivity

If you need to connect to a different network, or if you have restarted your computer, you may need to turn it on again with the below command:
netsh wlan set autoconfig enabled=yes interface="Wi-Fi"

Once connected, make sure to turn if off again.

My server manages several websites with different domains using Apache. The first time I used Let’s Encrypt I followed the default command which has created one certname for ALL my domains.

Now I want to remove just one domain from this certificate, and it becomes complicated to understand how to do it. The best solution is to create a new certificate for each of my domains, and then to delete the original certname.

Let’s say my certname is called www.example.com and it contains the below domains:

• www.example.com
• example.com
• blog.example.com
• other-example.com
• www.other-example.com
• my-other-domain.com
• www.my-other-domain.com
• api.test.com

The one I don’t need anymore is *.my-other-domain.com.

First, we create a certificate individually for each domain that we want to keep:

certbot --apache --cert-name example.com -d example.com,www.example.com,blog.example.com
certbot --apache --cert-name other-example.com -d other-example.com,www.other-example.com
certbot --apache --cert-name test.com -d api.test.com

--cert-name permits to give our own name to the certificate, and -d indicates which domains should be added to this certificate.

Then we can list all our certificates:

certbot certificates

Using the above command you can find the Certificate Path and now we can delete our original certificate:

certbot revoke --cert-path /etc/letsencrypt/live/www.example.com/fullchain.pem

You’re all set! All your domains should still have a correct certificate, and you revoked the ones you don’t need anymore.

(Source)

A few steps:

sudo apt-get install software-properties-common dirmngr
wget -qO - https://mariadb.org/mariadb_release_signing_key.asc | sudo apt-key add -
nano /etc/apt/sources.list.d/mariadb.list

In mariadb.list we add the two below lines:

deb [arch=amd64,i386,ppc64el] http://mirror.23media.de/mariadb/repo/10.4/debian stretch main
deb-src http://mirror.23media.de/mariadb/repo/10.4/debian stretch main

Then:

apt-get update
apt-get install mariadb-server

For me the issue was this part of the XML request: <AddWebPart xmlns='http://microsoft.com/sharepoint/webpartpages/'> (with a / at the end of the url) instead of <AddWebPart xmlns='http://microsoft.com/sharepoint/webpartpages'>.

Sometimes, when I open a new tab in Chrome, it first tries to get chrome-search://local-ntp/local-ntp.html and while it’s doing it, I cannot enter any URL. Eventually it will popup a message asking me if I want to wait or exit the page…

The way I found to fix it is to go to the page chrome://flags/#use-google-local-ntp, then I disabled “Enable using the Google local NTP”

Gmail could report back this error message: “Our system has detected an unusual rate of unsolicited mail originating from your IP address”

If your DKIM, SPF and DMARC are all set and your emails are correctly identified, then you may want to check the both links:

• Good links to get help on what to do: https://support.google.com/mail/thread/9191597?hl=en
• The form to be removed from GMail blacklist: https://support.google.com/mail/contact/bulk_send_new

Due to the 5,000 items threshold limitation it can become very frustrating to administrate Sharepoint. For example, if your list has more than 5,000 items, you cannot add an index, delete a lookup/people column, delete the list or the website, and more !

Hopefully some of the operations can be done with REST API, and in my organization the threshold limitation is removed during the night (1am to 4am). By combining a schedule service (like node-schedule) with my library SharepointPlus I can run this admin tasks during the night while my virtual computer is running.

To delete a column

$SP().ajax({
  url:"https://company.com/sharepoint/team/sales/_api/web/lists/getbytitle('My List')/fields/getbytitle('Column To Delete')",
  method: "POST",
  headers: {
    "IF-MATCH": "*",
    "X-HTTP-Method": "DELETE"
  }
});

To index a column

$SP().ajax({
  url:"https://company.com/sharepoint/team/sales/_api/web/lists/getbytitle('My List')/fields/getbytitle('Column to Index')",
  method: "POST",
  body:JSON.stringify({
    "__metadata":{ type: "SP.Field" },
    "Indexed":true
  }),
  headers: {
    "IF-MATCH": "*",
    "X-HTTP-Method": "MERGE"
  }
})

To delete a list

$SP().ajax({
  url:"https://company.com/sharepoint/team/sales/_api/web/lists/getbytitle('List To Delete')",
  method: "POST",
  headers: {
    "IF-MATCH": "*",
    "X-HTTP-Method": "DELETE"
  }
})

To delete a list

$SP().ajax({
  url:"https://company.com/sharepoint/team/sales/_api/web/lists/getbytitle('List To Delete')",
  method: "POST",
  headers: {
    "IF-MATCH": "*",
    "X-HTTP-Method": "DELETE"
  }
})

To delete a site

$SP().ajax({
  url:"https://company.com/sharepoint/team/sales/website_to_delete/_api/web/",
  method: "POST",
  headers: {
    "X-HTTP-Method": "DELETE"
  }
})

Finding the documentation for the Search REST API of Sharepoint is difficult…. There is a very old blog post that I’m going to replicate here to give more visibility:

Location of the Search Rest service

The Search REST service is located at the following URI: http://host/site/_api/search

The Search REST API

The Search REST service exposed by the URI specified above provides the following methods or entry points:

Query Parameters

The following table lists the query parameters available for the query entry point:

Suggest Parameters

The following table lists the query parameters available from the suggest entry point:

 References:

• [MS-SRCHCSOM]: Search Client Query Protocol Specification
• Search in SharePoint 2013 on MSDN

Examples

A postquery request will look like:

POST http://localhost/_api/search/postquery HTTP/1.1
Accept: application/json;odata=verbose
Content-Type: application/json;odata=verbose
Host: localhost
Content-Length: 419

{

 'request': {
     'Querytext': 'sharepoint',
     'StartRow':1,
     'RowLimit':8,
     'SelectProperties': {
          'results': ['Title','ContentSource','DisplayAuthor']
     },
     'TrimDuplicates':true,
     'Refiners':'companies,contentclass,ContentType(filter=7/0/*),FileExtension(filter=7/0/*),FileType(filter=6/0/*)',
     'RefinementFilters': {'results': ['filetype:equals("pptx")'] }
  }
}

After diging around for an exim4 problem (remote_smtp: message is too big (transport limit = 1)), I found the answer in this post:

Add “IGNORE_SMTP_LINE_LENGTH_LIMIT=1” in the exim4 config file (/etc/exim4/update-exim4.conf.conf), then restart exim4

With Sharepoint you can use SP.Utilities.Utility.SendEmail to send email in JavaScript, however you could receive the below error:

“The e-mail message cannot be sent. Make sure the e-mail has a valid recipient.”

After searching the web, I found the solution: instead of using an email address for the recipients you have to use the userDomain with “i:0#.w|”.

For example, if the user is John Doe, and his email is john_doe@company.com, then you should use something like i:0#.w|domain\\john_doe.